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Growth hacking agency London for faster, measurable growth

Run rapid experiments across acquisition, activation and revenue, with clear reporting and a plan built for scale.

Evidence-led experimentation sprints
Proprietary AI marketing tools
Official platform agency partners
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Full-funnel growth sprints

A growth hacking agency in London should deliver a repeatable experiment system, not a grab bag of tactics. We baseline your AARRR funnel, identify the biggest constraint, and run weekly tests across acquisition, activation, retention and revenue. Each sprint has a clear hypothesis, tracking plan and success criteria, so you know what worked and why. The goal is compounding gains: a better funnel this month, and a stronger growth engine next quarter.

AARRR audit and baselining

Map acquisition to referral with clean definitions for activation, retention and revenue. Find the biggest drop-off and build a focused backlog rather than testing everything at once.

ICE prioritisation and cadence

Prioritise experiments by impact, confidence and ease, then ship consistently. This keeps momentum high and prevents the common pattern of big plans with little execution.

Experiment reporting and learning

Document results and decisions after every test. Roll winning learnings into playbooks so improvements spread across channels, pages and lifecycle, not just one campaign.

Start a sprint

Built on measurement

Growth hacking only works when you can trust the signal. We set up practical measurement with clean event definitions, GA4 reporting, and tracking approaches that hold up under privacy constraints. Where attribution is imperfect, we lean on cohort analysis, controlled rollouts and incrementality-minded decisioning. You get a dashboard that shows what is moving your North Star metric and why, so the team can scale winners confidently.
  • Decision-grade tracking setup
  • Cohort and funnel visibility
  • Real-time performance dashboard

Acquisition with intent

We grow acquisition by matching channel economics to your ICP and stage. For demand capture, we build SEO and paid search around high-intent queries, supported by landing pages designed to convert. For demand creation, we run paid social on TikTok, LinkedIn and Meta, testing creative and offers quickly. We also use privacy-aware tracking and contextual targeting where needed, so performance holds up as targeting becomes less granular.

SEO for long-tail intent

Target high-intent keywords with focused landing pages and supporting content. Improve technical basics and internal linking so rankings turn into qualified traffic, not vanity impressions.

Paid media testing engine

Run structured tests across Performance Max, TikTok and LinkedIn, with clear hypotheses on hook, offer and audience. Scale only what proves value after conversion quality is checked.

Retargeting and nurture alignment

Segment retargeting by behaviour and funnel stage to avoid wasted spend. Connect ads to email nurture and on-site journeys so intent is captured, qualified and converted efficiently.

Fix acquisition

Activation, retention and PLG

Most growth stalls after the click. We improve activation and retention through onboarding optimisation, lifecycle messaging and product-led growth mechanics. That includes friction audits using heatmaps and session replays, plus experiments on pricing, packaging and in-product prompts. Where PLG fits, we design referral loops and sharing moments that are easy for users to trigger and easy for you to measure. The outcome is stronger LTV and more efficient acquisition.

Onboarding and activation optimisation

Reduce time to first value by simplifying journeys and clarifying next steps. Use behaviour data to identify where users drop off, then test fixes that improve activation rate.

Lifecycle and re-engagement programmes

Build segmented email and push journeys with behaviour triggers. Improve retention without spamming everyone by tailoring timing, frequency and content to user actions.

Referral loops and PLG mechanics

Design share flows and referral incentives that match your product value. Track referral contribution and quality, then iterate to improve conversion and prevent incentive abuse.

Lift retention

Execution at sprint speed

Founders choose growth hacking because they need speed. We deliver that with a structured cadence: weekly priorities, rapid production, and tight feedback loops between creative, media and product. Unlimited ad creative production is included, so you are not bottlenecked by design queues. You also get the ability to scale specialist resources up or down as your goals shift, without rebuilding a team.
  • Weekly sprints and iteration
  • Unlimited creative production included
  • Scale resources on demand

SEO that compounds, not a checklist

Organic growth is a mix of technical hygiene, content that earns clicks, and authority building that is genuinely deserved. We treat SEO as a product, with a backlog and a cadence, rather than a one-off project. Technical work covers crawlability, site architecture, Core Web Vitals, schema markup and index management. On-page work is driven by search intent and the real questions buyers ask at each stage. Off-page focuses on link earning through useful assets, partnerships and digital PR rather than spam. For example, for a B2B brand we might build a set of comparison pages for demand capture, a small research piece to earn links, and a library of problem-led articles that support sales calls. The outcome is more qualified traffic, better brand credibility, and lower dependency on paid media over time.

Clear pricing, aligned incentives

Agency incentives matter. We do not take commission on your ad spend, so recommendations are based on performance, not budget size. You also get transparent reporting through a real-time dashboard, so you can see what is being tested and what is driving outcomes. Engagements are monthly rolling, which keeps accountability high and lets you adjust scope as your growth stage changes.
  • No commission on ad spend
  • Monthly rolling engagement
  • Transparent performance reporting
What does a growth hacking agency in London actually do?
A growth hacking agency runs structured experiments to improve growth across the funnel, not just one channel. That includes acquisition, activation, retention, revenue and referral, with measurement that shows what moved the metric. In practice, you should expect a backlog of tests, weekly shipping, and clear learning. The goal is to build a repeatable growth engine rather than short-lived campaign spikes.
How do you decide which experiments to run first?
We start by baselining your funnel and identifying the biggest constraint. If acquisition is strong but activation is weak, the first tests focus on onboarding and first value moments. If conversion is the issue, we focus on landing pages, offers and sales journeys. We prioritise using an impact and effort framework, then run tests with defined success criteria so decisions are evidence-led.
Which channels do you typically use for growth in London?
Channel selection depends on your ICP and stage, but common levers include SEO for high-intent queries, paid search for demand capture, and paid social on LinkedIn, Meta and TikTok for demand creation. Retargeting and lifecycle nurture are used to convert interested users efficiently. We avoid dependence on one platform by building a mix and reallocating budget based on measurable outcomes, not preference.
Can you support product-led growth and referral loops?
Yes, where PLG fits your product and unit economics. We look for natural sharing moments, design referral incentives that do not distort quality, and build measurement so you can track referral contribution and downstream value. We also test onboarding prompts, in-product messaging and pricing or packaging changes that improve activation. The aim is sustainable growth loops, not gimmicks.
How do you measure results with privacy and tracking limits?
We set up decision-grade tracking using clean events, GA4 reporting, and privacy-aware approaches such as server-side tagging where appropriate. When user-level attribution is limited, we rely more on cohorts, funnel conversion rates and controlled rollouts to validate impact. We also focus on business outcomes like qualified pipeline and revenue, so you can scale based on signal that holds up in board-level reviews.
How many experiments do you run in a typical quarter?
The exact number depends on your team, traffic and product complexity, but we aim for a consistent weekly cadence rather than occasional big launches. Some tests are small and fast, like landing page or creative variations, while others require product or lifecycle changes. The important part is the system: prioritise, ship, learn, and roll winners into playbooks that compound over time.
Do you work with early-stage startups or larger companies?
We work across stages, but the approach changes. Early-stage teams often need messaging clarity, a lean channel mix, and fast learning to reach repeatable acquisition. Larger companies usually need tighter measurement, experiment governance, and cross-team rollout to avoid siloed wins. In both cases, we focus on the same principle: improve the full journey and scale only what is proven.
What makes Growthcurve different from other London agencies?
Most agencies sell channel management. Growthcurve delivers a complete growth team and a sprint-based operating system that integrates like in-house. You get unlimited ad creative production included, plus a real-time dashboard for transparency. We also charge no commission on ad spend, so incentives stay aligned. Engagements are monthly rolling, keeping accountability high without long contracts.
What do you need from us to get started?
We need access to your analytics, key ad accounts, and any CRM or product data that explains the user journey. We also align on your North Star metric, current constraints, and commercial guardrails such as CAC and payback. From there, we build the first sprint backlog and reporting. Within the first weeks you should see tests shipped and a clear view of what is driving results.

Lifecycle marketing that increases LTV

If you only optimise acquisition, you end up paying more for the same customers. We build lifecycle systems that raise retention and expansion, using email, SMS where relevant, and CRM workflows that feel personal without being creepy. We set up segmentation based on behaviour and value, then design flows for onboarding, activation, replenishment, win-back and referral. In practice that can include RFM modelling for ecommerce, lead scoring for B2B, or product usage triggers for SaaS. We also help you capture first-party and zero-party data with preference centres and progressive profiling, so targeting stays resilient as privacy changes. When we ran a lifecycle audit for one team, we found revenue sitting in overlooked moments, like post-purchase education and renewal risk signals. The outcome is a healthier blended CAC and a marketing engine that keeps paying you back.

Measurement you can trust and use

Attribution arguments waste time and block good decisions. We set measurement up so it is good enough to guide spend, creative and roadmap choices, and we are honest about what is knowable. Tracking work can include GA4 hygiene, conversion event design, server-side tracking where appropriate, and consistent UTMs. Reporting lives in a real-time dashboard, with views that match how you run the business, such as channel performance, funnel conversion, cohort retention and creative learnings. We also use incrementality thinking where it matters, like geo holdouts or controlled tests for bigger budget shifts. For example, if brand search rises after a video push, we look at the whole picture rather than declaring victory based on last click. The outcome is faster iteration and fewer surprises in board meetings.

Operating rhythm, SLAs and ways of working

Good marketing is mostly good operations. We set a working rhythm that keeps delivery moving and prevents strategy decks from becoming a comfort blanket. You get a named lead, specialist channel owners, and access to top-tier US and UK talent, scaled up or down based on your needs. We agree response times, approval flows and who owns what across creative, landing pages, tracking and budget changes. Campaign planning happens in short cycles, with clear priorities and a shared backlog, so work does not disappear into a black box. We also help your internal stakeholders, like product, sales and finance, stay aligned with what marketing is doing and why. The outcome is a calm, consistent cadence, less context switching, and a team that behaves like your internal staff while staying on a monthly rolling basis.

Why Growthcurve

Growthcurve is built for teams who want senior thinking and fast delivery without the overhead of building it all in-house. Our marketers have scaled startups to nine-figure valuations, and our clients have raised over $700M in funding, so we understand what investors and boards look for. You get a complete marketing department in one package, with specialists who integrate as your internal staff and can scale up or down as priorities change. We are an official Meta, Google, TikTok and Snap agency partner, and we have a deep creative engine, including unlimited ad creative production, because most growth ceilings are creative ceilings. You also get a proprietary suite of AI marketing tools and a real-time performance dashboard to keep decisions grounded. No long-term contracts, no commission fees on ad spend, just accountable work on a monthly rolling basis.

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