GTM agency · London · B2B go-to-market

The GTM agency for B2B go-to-market strategy and execution

GTM Quest is a GTM agency in London.

We define who you sell to and why they should choose you, then build the system that turns it into pipeline: LinkedIn, founder-led content, buying signals and outbound, running on a data layer you own.

We run it with you, or build it and hand it over.

The data, the tooling and the playbooks stay yours.

For B2B SaaS, technology and services teams in the UK, Europe and the US.

Reviewed by Dan Keegan, GTM Quest · 28 September 2026 · 14 sources linked below

How an engagement runswhat we undertake

  1. 01The motion startsDAY 1ACCOUNTS · FIRST CONVERSATIONS
  2. 02System built around itWEEKS 1 TO 4DATA · SIGNALS · CRM
  3. 03Channels join as readyWEEKS 2 TO 4ADS · CONTENT · OUTBOUND
  4. 04Measure and scaleMONTHS 2 TO 3RUN OR HAND OVER

Engagement models4

94%
of B2B buying groups ranked their preferred vendors before first contact
61%
of B2B buyers prefer a rep-free buying experience
17%
of B2B buying time is spent meeting potential suppliers
3 of 15
commercial activities marketing and sales actually collaborate on

01/ our service

GTM agency what we build for B2B teams

A GTM agency builds and runs the commercial engine that takes a B2B product to market.

This is what that means when we do it.

01

Your audience, defined

The ideal customer profile (industries, company sizes and roles that buy), the pain points that trigger a purchase, and the accounts worth pursuing first.

02

Positioning and messaging

Why you and not a competitor, written against the objections your buyers actually raise.

We use April Dunford's positioning method as a starting point.

03

Multi-channel execution

LinkedIn ads, founder-led content, signal-triggered outbound email and LinkedIn outreach, all aimed at the same account list so each channel warms the next.

04

The data layer underneath

A Postgres campaign database above your CRM, enriched in Clay, with website and engagement signals and the reporting that ties activity to pipeline.

05

A system you keep

Documented, trained and handed over.

The accounts, tooling and playbooks stay with you when the engagement ends.

06

Compliant from day one

Company-level tracking, UK GDPR and PECR handled properly, one do-not-contact list across every channel.

We start the GTM motion on day one and build the system around it, then improve it month by month.

Read more about what a go-to-market agency does.

02/ how it works

The Quest System four channels, one data layer

Four channels you can see, and a data layer you can't.

Each one warms the next: your LinkedIn ad mentions a framework, your content breaks it down, your website offers a deeper dive, and your outreach ties it together.

LinkedIn ads warm the audience

Document and thought-leader ads to your ICP and target accounts.

They build recognition before anyone is contacted.

  • ✓ Build recognition
  • ✓ Seed ideas early
  • ✓ Warm the audience

This is our own operational set-up, described so you can judge it.

It is not an industry benchmark.

Enrichment and data operations run in Clay.

On privacy: website tracking is company-level, not person-level.

Outreach follows UK GDPR and PECR.

B2B email to a limited company needs no PECR consent, but sole traders count as individuals (ICO).

03/ engagement

How we engage four ways to work with us

From complete handover to full partnership.

Pick by how much of the work you want to own.

How much of the work do you want to own?

Handover + support

We hand over, then stay close

Everything in Handover, then a consultant stays on one or two days a week to optimise and troubleshoot.

  • ✓ Everything in Handover
  • ✓ One or two days a week of consultant time
  • ✓ Weekly optimisation calls
  • ✓ Slack and email support

Best for teams building their own capability.

What it costs. Every engagement is scoped and quoted in writing after the discovery call.

Fees, media spend, data and tools are separate lines.

No long lock-in: the contract says how either side can stop.

04/ working with us

How our GTM engagements run the motion starts on day one

  1. 01

    Discovery call

    We learn your ICP, positioning and growth goals. No pitch, just the binding constraint as we see it.

    30 MINUTES
  2. 02

    The motion starts

    We agree the first target accounts with you and the conversations start the same day, from your founder's and team's LinkedIn, warm introductions and contacts you already have. The first content goes out.

    DAY 1
  3. 03

    The system is built around it

    The data layer, enrichment and signals and your CRM are built around the running motion, while sending domains warm in the background. Each channel joins as it is ready.

    WEEKS 1 TO 4
  4. 04

    Measure and scale

    We cut what is not working and scale what is. Then we hand over, or keep running it with you, with no dependency.

    MONTHS 2 TO 3

What to expect. Day one: the first conversations with buyers.

Month one: the system built around them, with each channel joining as it is ready.

Month two: pipeline starts to form, and the channels compound as signals inform the next round.

The timeline is indicative, not a promise.

Revenue follows your market and your sales cycle.

05/ our work

Recent work in the clients’ words and ours

client

1 Up Productions

"Working with the Quest team transformed how we approach outbound.

They built our entire Clay-based pipeline system in under four weeks and handed it over with proper documentation — we were running it independently within days.

The signal-triggered approach means we're reaching prospects at exactly the right moment."

Charlie Anderson, co-founder and Creative Director, 1 Up Productions

in progress

Climatise

A Clay-powered outbound system for a UK sustainability-compliance platform: four-channel ABM aimed at companies with SECR reporting obligations, with signal-triggered outreach.

Engagement in progress; results to follow when there are results to show.

published

Our own playbooks

We publish the go-to-market playbooks, frameworks and guides we use, so you can judge how we think before you talk to us.

See GTM playbooks and the article library.

06/ the difference

GTM agency vs marketing agency and vs a consultant or an in-house team

GTM agencyMarketing agency
Primary focusPipeline, revenue and conversionAwareness, traffic and leads
ChannelsOutbound, content, signals, sales messaging and RevOps, coordinatedSEO, social posting, creative ads
Success metricClosed deals, pipeline value, cost of acquisitionClicks, impressions, form fills
Works withMarketing, sales and founders togetherThe marketing team
What you keepThe system: data, tooling, playbooksCampaign assets

→ A GTM agency joins marketing and sales into one motion and is measured on pipeline.

Why it matters: in a Gartner survey of 412 senior marketing and sales leaders, the two functions collaborated on only three of 15 commercial activities.

A GTM agency works on exactly that gap.

07/ the basics

What is a go-to-market strategy? in two paragraphs

A go-to-market (GTM) strategy is a company's plan for reaching its customers and winning them: Wikipedia describes it as the plan for using outside resources, such as a sales force and distributors, to deliver the value proposition to customers and gain a competitive advantage.

In B2B it answers five questions: who to sell to (the ideal customer profile), why they should choose you (positioning), how they hear about you (channels), how they buy (the sales motion) and how you measure it.

What does GTM mean in business? Go-to-market: the plan and the machinery for taking a product to its buyers.

(In analytics, GTM also means Google Tag Manager; that is a different thing.) For the long version, read our guide to go-to-market strategy and the GTM glossary.

Why it matters more now

Buyers decide before they talk to you.

6sense found 94% of buying groups ranked their preferred vendors before first contact, and Gartner found buyers spend only 17% of their buying time meeting potential suppliers, shared across every supplier they consider.

Forrester puts a typical purchase at 13 internal stakeholders and nine external influencers.

A go-to-market strategy is how you reach that group before it has made up its mind.

08/ the plan

A go-to-market plan framework and examples

A strategy becomes a go-to-market plan when it has owners, dates and numbers: which accounts in which order, which channels with which budget, what the sales team does with what marketing creates, and which three or four measures decide whether it is working.

There is no single right framework.

Gartner's go-to-market framework and Harvard Business School's guidance for tech ventures are good starting points; McKinsey's B2B research found buyers now use ten channels on average, up from five in 2016, which is why the plan has to coordinate channels rather than pick one.

We compare seven frameworks in GTM strategy frameworks, show worked GTM strategy examples, and collect playbooks in GTM strategy playbooks.

To score your own, try the GTM scorecard.

09/ the system

GTM engineering and Clay the system under the strategy

GTM engineering is the work of building the data and automation behind a go-to-market motion: finding and enriching accounts, detecting buying signals, routing them to the right channel and measuring what happens.

A GTM engineer is the person who builds it: part RevOps, part data engineer, part marketer.

Most GTM engineering today runs in Clay, which combines dozens of data sources with workflow automation and AI research.

We use Clay for enrichment and signals, a Postgres database as the campaign system of record above the CRM, and AI for research and drafting.

So you own the data and the history, not a vendor.

For the role and how to hire one, see GTM engineer.

10/ the stack

GTM tools we use and what each is for

Tools change; the jobs don't.

This is our current stack, chosen per client.

We work with what you already have where it does the job.

Neon PostgresClayApifyRapidAPIClaudeGeminiInstantlySmartleadLaGrowthMachineLinkedInSuperGrowCanvaLeadfeederHubSpotAttioPipedriveSalesforce
JobTools we useWhy
Campaign data layerPostgres (Neon)One system of record above the CRM that you own, with the full history of every account and touch
Enrichment and signalsClay, Apify, RapidAPIAccounts, contacts and buying signals from many sources, combined and cleaned
Research and draftingClaude, GeminiAccount research and first drafts, always checked by a person before anything is sent
Cold emailInstantly or SmartleadSequencing from separate, authenticated sending domains
LinkedIn outreachLaGrowthMachineMulti-channel sequences from your team's own profiles, paced inside LinkedIn's limits
Content and adsLinkedIn, SuperGrow, CanvaFounder-led posts and document and thought-leader ads to the ICP
Website signalsLeadfeeder and similarCompany-level visit data, not person-level tracking
CRMHubSpot, Attio, Pipedrive, SalesforceWherever your sales team already works; we connect to it rather than replace it

11/ timing

When to hire a GTM agency five moments

Launching a product or company

You need the market, message and first channels defined before you spend.

Entering a new market

A new country or segment where you lack local knowledge, data or relationships.

Growth has stalled

The channels that got you here have stopped working and nobody can say why.

You need to move faster than hiring allows

A funding round, a board target or a launch date that won't wait for a team.

You lack a specialism in-house

ABM, GTM engineering, outbound infrastructure or RevOps you don't yet need full-time.

12/ what we run

The channels we run ABM, demand generation and outbound

Three services, one system.

Each has its own page with how we run it, what it costs in the market and the UK rules that apply.

ABM

Account-based marketing

For a named list of high-value accounts: tiering, buying-committee maps, tailored content and plays run with sales.

ABM agency UK →

demand

B2B demand generation

Positioning, founder-led LinkedIn content, paid LinkedIn and search, and capture, measured on pipeline, not MQLs.

B2B demand generation →

outbound

B2B lead generation

Signal-led cold email and LinkedIn outreach from protected domains, booking qualified meetings for your sales team.

B2B lead generation →

13/ strategy first

GTM consultancy strategy before spend

Not every company needs a system built straight away.

Sometimes the right first step is a GTM consultancy engagement: a few weeks on the ICP, positioning and sales motion, ending in a plan you can execute with your own team.

The difference between a GTM consultant and a GTM agency is mostly who does the work afterwards: a consultant designs the plan, an agency builds and runs it.

We do both, and we will tell you which you need.

Compare options in our guide to GTM consultants.

14/ who we work with

Go-to-market for B2B SaaS and startups after product-market fit

Most of our work is with B2B SaaS, fintech, technology and services companies that have proven people will buy but have not yet made revenue repeatable.

That is the stage where go-to-market work pays back fastest.

Earlier than that, the product is usually the constraint.

CB Insights' 2026 analysis of venture-backed shutdowns found poor product-market fit behind 43% of failures.

Before fit, spend on customer discovery and founder-led selling; we will say so on the first call rather than sell you a system.

For early-stage teams we usually build around the founder (their LinkedIn presence and their outreach), then hand the system to the first sales hire.

See also GTM agencies for startups.

15/ the team

GTM team, motion and RevOps who runs it after us

A GTM team is everyone who turns the plan into revenue: marketing, sales, customer success and revenue operations.

The GTM motion is how they work together: sales-led, product-led, partner-led or a mix.

RevOps is the plumbing that connects their data and handoffs.

The handoffs are where pipeline leaks, which is why every engagement ends with the definitions written down: what counts as a qualified account and meeting, who follows up and how fast, and how pipeline is reported.

If you are hiring the team, in-house sales development reps take time to become productive (the Bridge Group found an average 3.0-month ramp), so we usually prove the motion first and hire into it second.

16/ how we engage

Fractional GTM and GTM as a service senior help without a full-time hire

Fractional GTM means senior go-to-market leadership for one or two days a week: our Handover + support and Embedded models.

GTM as a service means we run the whole motion for you as an external team.

Both suit companies that need the expertise before they can justify the headcount.

If what you need is a part-time marketing leader rather than a system, our sister site Fractional Quest covers fractional CMOs.

17/ before you sign

How to choose a GTM agency including us

01

Stage fit

Have they taken companies through your stage and motion, not just names you recognise?

02

Strategy and execution

The best partners both plan and build.

Ask what you will have at the end: a deck, or a working system.

03

Ownership, not lock-in

You should keep the playbook, data and tooling.

Avoid agencies where everything disappears the day you leave.

04

Measurable pipeline

Ask how they attribute pipeline and revenue, and to see a client outcome at your stage.

05

Who does the work

Named people in the proposal, and how much senior time you get after the pitch.

06

Compliance

How their data and outreach meet UK GDPR and PECR, or the rules in your market.

18/ where

Where we work London, the UK, Europe and the US

We are based in London and work with B2B teams across the UK and Europe, and with UK companies selling into the US.

The system is built to work across markets; the compliance rules are set for the market you sell into.

For named accounts in those markets, see our ABM agency London page.

If you are looking for a firm in a specific city or a specialist in one channel, our agency directory lists go-to-market agencies by country and specialism, and our service pages each end with specialists we rate for work we don't do.

15 minutes · video or phone

Book 15 minutes with a GTM consultant

Tell us where pipeline stalls today. We come back with the binding constraint as we see it and what we would build first, whether or not you work with us.

  1. 0115 minutes, video or phone
  2. 02We look at your ICP, positioning and channels
  3. 03A written next step after the call
  4. 04Handover, embedded or run-for-you engagements
Open the calendar in a new tab →

Pick a day that suits · live availability

19/ questions

GTM agency FAQ

The questions B2B teams ask before hiring a go-to-market agency, and about how we work.

A GTM (go-to-market) agency builds and runs the commercial engine that takes a B2B product to market: the ICP and positioning, then demand generation, account-based marketing, outbound and revenue operations, coordinated into one motion and measured on pipeline.

See what we build.

It defines who you sell to and why they should choose you, builds the data and channels that reach them, runs the campaigns with your sales team, and measures pipeline and revenue.

Many, including us, hand the system over when you are ready.

A plan for reaching and winning customers: who to sell to, why they should choose you, how they hear about you, how they buy and how you measure it.

See what a go-to-market strategy is.

Go-to-market: the plan and the machinery for taking a product to its buyers.

In web analytics, GTM also stands for Google Tag Manager, which is unrelated.

A marketing agency usually runs channels and reports clicks and leads; a GTM agency coordinates marketing and sales into one motion and is measured on pipeline and revenue.

See the comparison.

The best one is the one that fits your stage, motion and market.

We are a London GTM agency that does strategy and hands-on build, then hands the system over.

If you need a specialist in one channel, each of our service pages ends with firms we rate, and our directory lists more.

It depends on scope: a strategy sprint costs less than a system build, which costs less than running several channels for you.

We scope and quote in writing after a 15-minute call, with fees, media, data and tools as separate lines.

The person who builds the data and automation behind a go-to-market motion (enrichment, signals, routing and reporting), usually in tools like Clay.

See GTM engineering and GTM engineer.

A go-to-market strategy with owners, dates and numbers: which accounts in which order, which channels with which budget, and the measures that decide whether it works.

See the plan.

Yes, mostly companies with product-market fit whose revenue is not yet repeatable.

Before fit, we will tell you to spend on discovery and founder-led selling instead.

See SaaS and startups.

Everyone who turns the plan into revenue (marketing, sales, customer success and revenue operations), and the way they hand work to each other.

Fractional GTM is senior go-to-market leadership for one or two days a week; GTM as a service means an external team runs the motion.

See fractional GTM.

Our four-channel method (LinkedIn ads, founder-led content, signals and contextual outbound), running on a Postgres and Clay data layer, built with you and handed over.

See the Quest System.

The first conversations start on day one, the system is built around them over the first month, and we aim for pipeline forming in the second month; revenue follows your sales cycle.

Content and brand compound over months; outbound and paid move faster.

Use an agency to design and prove the motion quickly, and in-house hires to run it once it works.

Hiring a team before the motion is proven is the expensive mistake.

Clay is a data enrichment and workflow platform that combines many data sources with automation and AI research.

GTM agencies use it to find and enrich accounts, detect buying signals and feed outreach.

We pair it with our own Postgres database so the data stays yours.

See GTM tools.

Pipeline and revenue from target accounts, meetings held, the self-reported source of every booking, win rate and sales-cycle length, not impressions or lead counts.

When launching a product, entering a new market, when growth has stalled, when you need to move faster than hiring allows, or when you lack a specialism in-house.

See when to hire.

Yes.

Our Handover + support and Embedded models provide senior go-to-market leadership one or two days a week.

See how we engage.

Yes.

We are based in London and work with teams across the UK and Europe, and with UK companies selling into the US.

See where we work.

Book 15 minutes · London · UK, Europe and US

Bring the pipeline problem. We’ll find the constraint.

A 15-minute call, a written next step, and a go-to-market system built with you. Then we run it together or hand it over.

📞