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London growth agency built to improve CAC payback fast

We run full-funnel growth in London and globally, combining paid media, CRO and lifecycle to improve unit economics.

Unlimited creative production included
No commission on spend
Real-time performance dashboard
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5 Star Agency

What a growth agency does

A London growth agency is responsible for measurable growth across the full customer journey, not just top-of-funnel activity. That means building acquisition through performance media, improving conversion with CRO, and protecting unit economics with retention and lifecycle work. The best teams operate with rapid experimentation, strong tracking, and tight feedback loops between marketing, product and sales. We bring that operating model, so your spend follows evidence and your priorities are driven by the bottleneck in your funnel.

Full-funnel growth ownership

Align acquisition, conversion and retention under one plan, so campaigns, landing pages and lifecycle messages work together to drive revenue outcomes.

Experiment-led execution cadence

Run weekly tests across creative, audiences and landing pages, then scale winners quickly using clear KPIs rather than opinions or fixed plans.

Measurement that drives decisions

Use reliable tracking, attribution views and cohort reporting to understand what is working, where payback breaks, and what to do next.

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Built for Series A to B

London teams often hit a growth ceiling when acquisition scales faster than the product and funnel can handle. Costs rise, lead quality drops, and reporting becomes noisy. We run a full-funnel approach: tighten targeting and creative to improve acquisition efficiency, then improve conversion and activation with CRO and lifecycle. This is how you protect payback and build the foundations to scale budget without losing control.
  • Improve payback before scaling
  • Full-funnel bottleneck fixing
  • Clear KPIs and ownership

Performance media in London

We run performance advertising across Google, Meta, LinkedIn and TikTok with a focus on efficient growth, not vanity reporting. Campaigns are structured for learning: clean audience segmentation, clear conversion events, and creative testing that isolates what is driving performance. Post-cookie reality is handled through first-party measurement and privacy-safe setups, with tracking that is robust enough to support decisions. You get weekly iteration, faster creative cycles, and spend allocation based on results.

Channel mix by ICP

Select platforms based on where your buyers act, then build a plan across search, social and retargeting with clear roles for each stage.

Creative velocity and DCO

Ship new concepts weekly and iterate on hooks, proof and offers. Unlimited creative production supports faster learning and fresher ads.

Privacy-safe targeting and tracking

Use first-party data, server-side tracking where appropriate, and consent-aware analytics to keep performance measurable under GDPR expectations.

Scale paid media

CRO, retention, analytics

Scaling in London often fails at the funnel handoff: traffic increases but conversion, activation and retention do not. We fix this by running CRO with structured experimentation and evidence-led prioritisation, then building lifecycle journeys that improve LTV. Measurement is not an afterthought. We connect events to revenue, use dashboards to guide weekly decisions, and apply blended measurement approaches when last-click falls short. The goal is a growth system that can scale without breaking payback.

CRO with prioritised tests

Use heatmaps, session replays and structured experiments to improve key pages and flows, focusing on the highest-leverage friction first.

Lifecycle retention programmes

Build onboarding, nurture and win-back sequences triggered by behaviour, improving activation and retention so acquisition scales sustainably.

Attribution and incrementality

Use attribution views, cohort reporting and practical lift checks to understand real impact and allocate budget with confidence.

Fix the funnel

Operate in weekly sprints

Most agencies report monthly and move slowly, which means you get too few iterations to find a winning message or audience. In competitive London markets, that lag is expensive. We work in weekly sprints with a single cross-channel backlog. Creative, media, CRO and lifecycle work move together, and performance is visible in real time. This gives you faster learning cycles and fewer expensive mistakes driven by guesswork.
  • Weekly iteration beats competition
  • Creative and CRO together
  • Evidence-led budget decisions

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.

Why Growthcurve

Growthcurve is a London growth agency for founders and growth leaders who want a complete marketing department without hiring. Our specialists integrate like internal staff and can scale up or down as your bottleneck changes. Unlimited ad creative production is included and we charge no commission on ad spend. You also get proprietary AI marketing tools and a real-time performance dashboard, delivered on monthly rolling terms.
  • Complete team in one
  • No commission on spend
  • Monthly rolling engagement
What does a London growth agency help with day to day?
A London growth agency should own growth execution across channels and the funnel. That typically includes paid media management, creative testing, landing page optimisation, and lifecycle messaging that improves activation and retention. Day to day, the work is prioritising the biggest bottleneck, shipping improvements, and measuring the impact. You should receive clear visibility into what was delivered, what changed in performance, and what is being tested next.
Which channels do you run for London and UK audiences?
We typically run Google Ads for high-intent capture, Meta and TikTok for scalable demand creation, and LinkedIn for B2B targeting where it fits the ICP and deal size. Retargeting and lifecycle email then convert and retain the demand you generate. Channel choice depends on your buyers, sales cycle and unit economics. We start with small tests to validate performance, then scale budgets into the channels that hit payback and quality targets.
How do you handle GDPR and post-cookie measurement challenges?
We design measurement around first-party data and consent-aware tracking, so reporting stays useful even when platform attribution is incomplete. That usually means clear conversion events, strong UTMs, and analytics setups that can support revenue reporting. Where needed, we use server-side tracking approaches and blended measurement views. The goal is not perfect attribution, it is enough confidence to scale what works and stop what does not.
Do you offer CRO and landing page optimisation too?
Yes. Growth often stalls because teams buy more traffic while the site converts poorly. We run CRO alongside media: identify friction with analytics, heatmaps and session replays, then test improvements to pages and flows. We focus on the highest-leverage steps first, such as pricing, checkout, demo forms or onboarding. This typically improves conversion and reduces CAC without increasing spend, which makes scaling much safer.
How do you decide what to test and what to scale?
We start with a north star metric and stage KPIs, then score a backlog of ideas by expected impact, confidence and effort. This keeps testing focused on what can move the business, not what is easiest to ship. Each sprint produces learnings you can reuse across channels, such as which hook, offer or audience segment performs best. Winners get scaled and refreshed, while losers are cut quickly to protect budget.
Can you support B2B growth in London with ABM?
Yes, when ABM matches your sales motion. We support account-based approaches by aligning targeting, messaging and outreach across LinkedIn, paid search, retargeting and sales enablement content. The key is focus: a defined account list, clear buying committee roles, and personalised proof that supports sales conversations. We also build reporting that connects marketing touches to pipeline stage movement, so ABM spend is tied to measurable progress.
What does your reporting and dashboard include?
Our reporting focuses on decision-making. You get a real-time dashboard covering core KPIs like spend, CAC signals, conversion rate, and funnel stage movement, plus creative and audience performance so you know what to iterate. We also track leading indicators such as landing page conversion and activation steps, because those often change before revenue does. Updates are tied to what shipped and what we are testing next.
How does your monthly rolling engagement work in practice?
Monthly rolling means you are not locked into long contracts. We agree goals, KPIs and an initial roadmap, then run weekly sprints with continuous reporting so you can see progress quickly. If priorities change, we can shift the backlog and reallocate specialist time without renegotiating a new scope. This model works best when delivery is consistent and measurable, so you always know what you are paying for and why.
Why choose Growthcurve as your London growth agency?
Growthcurve gives you a complete marketing department in one package, built to move faster than in-house hiring or fragmented agencies. We integrate like internal staff and run weekly sprints across paid media, creative, CRO, lifecycle and analytics. Unlimited ad creative production is included and we charge no commission on ad spend. You also get a real-time performance dashboard and monthly rolling terms, so you stay flexible with clear accountability. Book a call

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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