How to choose a B2B SEO agency: A checklist for UK marketing teams

SEO

Choosing a B2B SEO agency is difficult.

Afterall, there is significant risk involved. You are being asked to invest in work that doesn’t always give immediate results and, regardless of how experienced the agency is, by its very nature cannot come with guaranteed results.

Also, two providers may both offer the key components of a well-structured SEO campaign, but deliver those services in very different ways. Whereas one may provide senior strategic input, expert-led content and clear implementation support, another may rely on generic packages, outsourced fulfilment and reporting focused mainly on traffic.

Plus, there’s an extra challenge. It is not simply about identifying whether an agency understands SEO; it’s also about deciding whether that agency understands your business model, target clients, sales process and internal capabilities well enough to build the right campaign.

This guide explains the questions to ask, the evidence to request and the warning signs to look for before appointing a B2B SEO agency.

Who is this guide for?

This guide is written for:

• Marketing managers comparing SEO suppliers.
• Directors responsible for lead generation.
• Established service businesses that have outgrown DIY SEO.
• In-house teams that need additional expertise or implementation support.
• Companies replacing an existing SEO provider.
• Businesses deciding between an agency, consultant, freelancer or internal hire.

It will be particularly useful where SEO needs to generate qualified enquiries rather than large volumes of general traffic.

Why choosing a B2B SEO agency is different

Most SEO agencies understand the basic principles of search engine optimisation.

They know how to research keywords, improve pages, fix technical problems and build links.

But B2B SEO is different from B2C SEO. An agency providing B2B SEO services needs to understand how longer sales journeys, specialist subject matter and lead quality change the strategy.

To begin with, the sales cycle tends to take a lot longer in B2B marketing as several people are involved in the decision-making process. As such, the content that a website requires is different to that of a B2C service or product and may need specialist or technical input. 

In addition, lead quality often matters much more than raw traffic, as one enquiry may have significant value. 

These kinds of differences may mean that B2B SEO strategies differ from B2C ones. 

If an agency judges success mainly by traffic growth, it may chase the wrong opportunities; you could end up with thousands of extra visits from people who will never become clients. Whilst this may look good in a report, it does not necessarily help your business.

How different agencies may approach B2B SEO

Even within B2B SEO itself, there are differences in approach that agencies take.

Some agencies are highly focused on domain authority. Their main goal is to increase visibility by building lots of backlinks to your website. 

Some focus more heavily on content volume. They may aim to publish a certain number of articles each month and rely on scale to increase traffic.

Others still are more commercially focused. They look at which searches are most likely to lead to a good-fit enquiry, even when the search volume is relatively low.

There are also agencies that specialise in particular areas, such as:

• Technical SEO
• Content marketing
• Digital PR
• Local SEO
• Conversion rate optimisation (CRO)
• Enterprise SEO

None of these approaches is automatically wrong.

The important question is whether the agency’s strengths match what your business actually needs. For example, a business with a technically broken website may need a technical specialist, whereas a company with strong internal writers may need strategy and technical support rather than outsourced content.

Example: How Twogether Digital approaches B2B SEO

At Twogether Digital, we lean towards a commercial approach to SEO. We begin by understanding who you actually want to attract and what a commercially useful enquiry looks like for your business. 

We do not automatically prioritise the keyword with the largest search volume, but instead consider:

• The type of organisation using the search term.
• The person likely to be searching.
• The service they need.
• Their stage in the buying journey.
• The potential value of the opportunity.
• Whether the term is likely to generate a suitable enquiry.

We place a great emphasis on creating high-quality content, and then supplement this by building ethical links methodically along the way.

Understanding who you’re trying to reach and what information they need forms the foundation of our KnowShowGrow framework and our SEO services for B2B businesses.

So, with all these things to consider, how can you choose the right B2B agency for your business?

A quick B2B SEO agency evaluation checklist

In case you don’t have time to go through the whole process, here’s a handy checklist that summarises what we’re going to unpack in more depth as the guide continues. You may like to use this as a prompt. As you assess each agency, score each potential provider from 1 to 5 against the following criteria:

Area	Question to assess
Commercial understanding	Do they seek to understand which services, clients and outcomes matter most?
B2B experience	Can they demonstrate experience with long sales cycles and specialist services?
Strategy	Is the proposed plan tailored to your business?
Delivery team	Do you know who will actually complete the work?
Implementation	Will they act on recommendations or only provide advice?
Content quality	How will your expertise be captured and reflected?
Link building	Are the methods transparent, relevant and ethical?
Reporting	Will success be connected to enquiries, pipeline and revenue?
Communication	Can they explain their work clearly?
Fit	Does their model complement your internal capabilities?

A high overall score is useful, but pay particular attention to the areas most closely connected to the weaknesses in your current team.

Let’s unpack the detail.

Start with your commercial priorities

Before comparing agencies, it helps to be clear about what you actually need.

Don’t worry, you don’t need to create a perfect brief! But it will really help if you are able to explain the main problem you’re having. For example, that might be:

“We are too reliant on referrals.”

Or

“Our website is not generating enough enquiries.”

Each situation will be different and will require a strategy. 

If you’re not sure, ask yourself: what would success look like? Whatever that is will probably be your ultimate goal. You can work backwards from there, suggesting other objectives that you want to achieve, such as “beating our competitors in our local area”. 

Sometimes SEO is not the answer

At Twogether Digital, we do not assume that SEO is automatically the answer to everything.

Before recommending a campaign, we look at how your brand, website, content and search visibility work together.

Sometimes poor SEO is the main issue.

But in other cases, the main problem could be something else. For example, the website may be attracting visitors but failing to explain the service clearly, or the brand may not stand apart from competitors.

Our more joined-up approach is encapsulated by our KnowShowGrow framework:

• Know who you are and who you want to reach.
• Show your value clearly through your website.
• Grow your visibility through ethical SEO/GEO. 

Our goal is to recommend the right solution to your problem rather than automatically selling the largest retainer. 

When choosing your SEO provider, make sure they are diagnosing the real problem or fitting your business into the service they want to sell. 

Consider your in-house capabilities

When choosing a provider, you need to consider the level of SEO support that you need. There are different options:

1. Full Retainer: The SEO agency will do everything – strategy, content, link building, website development (if required), technical fixes, the works.
2. Content & Strategy Retainer: The SEO agency will do the strategy, content and potentially the link building; but you’ll need another provider to do the technical support or website development.
3. SEO Consultation: The SEO provider may do an initial audit and set the strategy, but then it will be up to your internal team to do the content or link building.

Some businesses do have the capacity in-house to create content. This is great! Not only will your content be full of fantastic industry expertise (which is great for your SEO), but you’ll be able to save a ton of money. You may only need to pay for some consultation following an audit. 

If this is you, consider looking for an SEO provider who can work with your internal team, either setting strategy and then optimising content that your team writes, or training your employees in the ways of SEO as you go along. 

Consider how well the agency works to understand your business model

A B2B SEO strategy should begin with your business, not a list of keywords.

A good SEO service provider should want to understand:

• What you sell.
• Which services matter most.
• Who your ideal clients are.
• How much a good client is worth.
• How long your sales process takes.
• Who influences the buying decision.
• What makes you different.
• Which competitors you encounter.
• What your internal team can handle.

Be cautious if the conversation moves straight to traffic and rankings without any discussion of commercial goals. It’s not possible for any agency to know everything on day one, but it should show genuine curiosity.

How different agencies may learn about your business

A lighter-touch agency may rely mainly on a written onboarding form or a short introductory call to learn about your business. But a more involved agency may run:

• Discovery workshops.
• Interviews with sales teams.
• Interviews with subject-matter experts.
• Customer research.
• Stakeholder sessions.
• Brand and positioning exercises.

At Twogether Digital, we are huge advocates of spending time with our clients to truly understand their business and their industry. We run all of the above, ensuring that any content we write and any strategies we develop are fully aligned with your business’s goals, audience, needs and industry. 

Avoid agencies that don’t talk to you (or your team) at all costs. They may be creating content by just copying other businesses’ websites or relying on AI-generated content. You don’t want to just sound the same as everyone else, and content without original thought, opinion and expertise does not rank well in today’s AI-driven world. 

Check how much experience the agency has with B2B companies

Some agencies specialise in one industry. This can be incredibly valuable because they may already understand your audience, competitors and common search behaviour. 

However, an agency does not need to have worked with a company identical to yours to do a good job. In fact, too much sector exclusivity can create its own problems if the agency is working with several direct competitors. It might be worth checking how they deal with conflicts of interest (i.e. when two of their clients are competing for the same audience, keyword or dominance in the same area)

Other agencies work across several B2B sectors. They may bring broader ideas and avoid relying on a fixed industry formula, but they may need more time to learn the details of your industry.

What is more important is checking whether an agency has case studies on its website that demonstrate its expertise. 

The quality of an agency’s case studies also varies.

Some focus heavily on traffic and rankings, whereas others can show qualified enquiries and commercial outcomes. Make sure you look beyond the headline number and ask what the work changed for the business.

Our B2B experience

At Twogether Digital, we work particularly well with specialist B2B and service-based companies where trust, expertise and clear communication matter.

Our experience includes:

• Technical and engineering services.
• Recruitment.
• HR and employee benefits.
• Professional services.
• Construction.

Our projects do not all begin in the same place.

Example	Delivery Model	Client Situation	Support Required	Why the delivery model mattered
NDT Group	Managed B2B SEO support	NDT Group needed to make a technically complex service offer clearer online and improve visibility across service, sector and informational searches.	The project combined website structure, service-page development, supporting content, internal linking and ongoing SEO implementation.	The business needed an agency capable of learning technical subject matter and acting on the recommendations, rather than only providing an audit.
VIQU IT	Consultancy for an experienced internal team	VIQU IT already had an experienced marketing function but needed external SEO expertise, commercial keyword direction and clearer priorities.	The work focused more heavily on strategy, analysis, page-role clarity and guidance for the internal team.	A full outsourced campaign would have duplicated skills already available inside the business.

These examples show why the best SEO arrangement depends on the capability and capacity already available inside your organisation. You can explore these and other projects in our client case studies.

Check who will actually work on your account

This is one of the most important questions you can ask. You may meet a senior strategist during the sales process, but who will do the day-to-day work once the contract begins?

Ask:

• Who will create the strategy?
• Who will carry out the keyword research?
• Who will write the content?
• Who will make technical changes?
• Who will build links?
• Who will review performance?
• Who will attend meetings?
• Will any work be outsourced?

How different agency delivery models work

A larger agency may use separate departments for:

• SEO Strategy.
• SEO Content.
• Technical SEO.
• Link building.
• Account management.

This can provide access to a wide range of skills (which is great!).

However, it may also mean you communicate mainly through an account manager rather than the specialists doing the work.

A smaller agency may give you direct access to senior people, but it may rely on freelancers or external specialists for certain services. Whilst there’s nothing wrong with freelancers (they often have experience with lots of different industries), look out for agencies that outsource most of their fulfilment to white-label providers.

That is not automatically a problem, but you should know:

• Who controls quality.
• Whether the outsourced team understands your business.
• Who is accountable.
• Whether the work is being reviewed.

The delivery model should be clear rather than hidden behind the agency brand.

Check who will implement the work

Some agencies identify problems but do not fix them. Whilst they may provide audits, recommendations and a detailed plan, if you do not have the internal capacity to implement the changes, then you may get a bit stuck. 

Full-service agencies may handle everything – from content writing to tracking. 

There is no single correct model, but you need to know where responsibility sits. A cheaper consultancy package may become more expensive if you also need to pay a developer or content writer to implement everything.

Check how the content will be created

Content plays a major role in B2B SEO, but the quality can vary enormously depending on which agency you engage. Ask how the agency creates the content that is going to form a major part of your campaign. 

How different agencies may create content

Some agencies employ an in-house team of specialist writers; others use freelance writers or white-label content providers. Others still rely on AI-generated content. 

There are good and bad ways to employ AI. AI is a fantastic tool and can help to reduce the time it takes to create content (which can reduce costs on your end if the agency passes these savings down to its clients). 

AI can support research, planning and drafting, but publishing large volumes of unedited, generic content is unlikely to provide lasting value. The main issue is not simply whether AI was used; it is whether the finished content is accurate, original, useful and informed by genuine expertise.

For specialist B2B subjects, ask how the agency will:

• Avoid publishing material that simply repeats existing search results.
• Fact-check technical claims.
• Capture first-hand experience.
• Add original examples.
• Review the content with your experts.
• Maintain a consistent brand voice.

The issue isn’t whether AI is used or not; it’s how much human expertise, fact-checking, and editing go into the final piece.

Positive ways of utilising AI include:

• Generate ideas.
• Building briefs.
• Summarising research or reports.
• Drafting sections.
• Proofreading copy

For specialist B2B content, accuracy and credibility usually matter more than volume.

Check how the agency approaches link building

Link building is one of the areas where agencies can take very different approaches.

It is also one of the areas where poor practice can create the most risk!

How different agencies may build links

There are many ways to build links, but not every method is good for your website!

At the riskier end of the spectrum, an agency may use private blog networks (PBNs) or buy link insertions (this is when you pay to have a link added to an existing article that you have not written). 

These approaches, and others like them, are often described as black-hat or grey-hat link building. They can produce a high number of links quickly; however, these practices run counter to Google’s guidelines, and you could be at risk of penalties that affect your website’s visibility. 

At the more conservative end, agencies may build links through:

• Partnerships.
• Industry relationships.
• Digital PR.
• Responding to journalist requests (expert commentary).
• Original research.
• Useful resources.
• Professional organisations.
• Relevant directories.

These are generally considered white-hat approaches because the link is earned through genuine relevance, value or a real relationship.

There are also agencies that sit somewhere in the middle; they may utilise a lot of the “white hat” techniques but apply strict quality and relevance checks if buying any supplementary guest post placements.

This can be difficult for people to evaluate because agencies do not always disclose how the links were secured; make sure you ask for a clear explanation of the method, not just the number of links promised.

Questions to ask about link building

• Will we see the websites before links are placed?
• Are links being paid for?
• Is the placement relevant to our market?
• Is the website publishing real editorial content?
• Is the link likely to be useful to a genuine reader?
• Are links directed only to the homepage or also to priority pages?
• How is quality assessed beyond third-party authority metrics?
• Will the agency report where each link came from?
• What happens if a link is removed?
• Are any private networks or bulk packages being used?

How we build links

At Twogether Digital, we take an ethical, relevance-led approach to link building.

That means we do not buy bulk backlink packages or place links on websites purely because a third-party metric looks impressive.

Our favourite link-building activities include:

• Responding to journalist requests (providing expert commentary on third-party websites).
• Identifying relevant directories and memberships.
• Creating useful resources (such as downloadable assets or blogs).
• Developing original research.

We look at whether a website is relevant, credible and likely to be useful to your audience.

A link should help strengthen your reputation, not simply increase the number shown in an SEO tool!

Our guide to ethical link building explains this approach in more detail.

You can also read about our wider ethical SEO service.

Check how success will be measured

What would success look like from your point of view?

More enquiries? More demos booked? Selling more of a specific product or service?

A good agency should aim to understand what success means for your business.

How different agencies define success

Some agencies measure success primarily through rankings, others through organic traffic.

More commercially focused agencies may measure enquiries, lead quality and revenue. 

All these metrics can be useful, but if the chosen metric is disconnected from the business goal, then it can become a problem. 

For example, an increase in traffic may be positive, but if the traffic comes from the wrong audience, it may not represent commercial success.

A strong measurement framework should include both:

• Leading indicators, such as visibility and traffic.
• Commercial outcomes, such as qualified leads and revenue.

Learn more about how to measure the success of your B2B SEO campaign here.

Agency, freelancer or in-house team?

We have talked a lot about different types of agencies in this guide. But sometimes, an agency is not automatically the right answer. The best option depends on your situation.

1. A freelancer may suit you when you need one specialist skill or your budget is limited.
2. An agency may suit you when you need several skills, such as strategy, content and technical work.
3. Developing an in-house team may suit you when you can afford to recruit a specialist, or you want complete control over implementation

But there is also a fourth option: you can combine them.

Many businesses use:

• An in-house marketing manager.
• An SEO agency (or a digital marketing agency that provides SEO services).
• A digital PR agency (to support the development of their domain authority through links).
• A freelance web developer.

This can work well when responsibilities are clear, but it can also become fragmented if each supplier works separately with no idea what is going on with the other providers. 

A full-service agency can simplify the process, but convenience sometimes comes with a slightly higher cost, and you may duplicate some skills you already have internally.

The best model is the one that fills genuine gaps without creating unnecessary duplication.

Warning signs to look out for

Not every concern means you should immediately walk away, but several warning signs together should make you cautious.

Red flag	Why it matters	What to ask
Guaranteed rankings	No agency controls Google	What evidence supports this forecast?
Instant-result promises	Sustainable SEO usually takes time	What may improve quickly and what will take longer?
Traffic-only reporting	Traffic may come from unsuitable audiences	How will you measure lead quality?
No sales-process questions	The campaign may target the wrong intent	How will you learn how our clients buy?
Vague link methods	Low-quality links may create risk	Where and how will links be acquired?
Very cheap content at scale	Quality and expertise may be weak	Who writes, reviews and approves it?
Strategy before discovery	The plan is probably generic	What research happens before recommendations?
Hidden delivery team	Sales and fulfilment may be disconnected	Who will work on our account?
Recommendations without ownership	Work may never be implemented	Who is responsible for each action?
Unclear reporting	Poor performance may be disguised	Which commercial outcomes will be tracked?

Green flags to look for

A strong B2B SEO agency will usually:

• Ask detailed questions before proposing a strategy.
• Admit where information is missing.
• Explain trade-offs rather than presenting every activity as essential.
• Show how keywords map to commercial pages.
• Distinguish traffic growth from lead quality.
• Explain who owns implementation.
• Be open about outsourced work.
• Use subject-matter experts in the content process.
• Discuss measurement limitations honestly.
• Provide examples of work with complex service businesses.
• Recommend consultancy where full outsourcing would create duplication.
• Avoid guaranteeing rankings or fixed outcomes.

Choose an agency that fits the business you are building

The best B2B SEO agency is not necessarily the provider with the longest list of deliverables, the largest team or the lowest monthly fee.

It is the agency that understands:

• Which clients you want to attract.
• Which services matter most.
• How your buyers make decisions.
• What expertise already exists inside your team.
• Which work needs to be implemented.
• How success should be measured.

If being able to work with a local team matters to you, location can be part of the decision too. Twogether Digital is a Birmingham SEO agency working with B2B and service businesses that want a commercially focused SEO strategy, while still delivering campaigns for clients across the UK.

For established service businesses, the right campaign should improve more than rankings.

It should make the website easier to understand, strengthen the pages responsible for generating enquiries and build visibility among the organisations the business genuinely wants to reach.

Our B2B SEO services are designed for companies that need ongoing strategy and implementation across content, technical SEO, internal linking and authority building.

Where your internal team can deliver the work, our SEO consultancy service provides strategy, training and expert oversight without duplicating existing skills.

Explore our B2B SEO services