01. Services
02. Problem we solve
Most businesses get to a point where they need senior growth firepower but can't justify a full hire. Or they have a growth lead and need backup in specific lanes without diluting them.
The market answer is usually a generalist agency that ships impressions, or a freelancer who's brilliant in one channel and silent everywhere else.
We are the third option. A senior team that runs your acquisition, CRM and conversion as if we worked there, contracted as if we did not.
03. Performance Marketing
Identify the bottleneck. Concentrate spend there. Most breakouts come from one channel finally working, not five at half power.
We run weekly experiments. Every week's result informs the next week's brief. You always know what's live and why.
Server-side CAPI, proper deduplication, dashboards that report contribution margin and payback period instead of vanity ROAS.
We use Veo, Imagen, Gemini and HeyGen to produce static and video variants at ten times the volume a traditional agency can ship. We test them properly in market.
Meta, Google, TikTok, LinkedIn, paid newsletters. We have run all five at scale and pick on incrementality, not on what looks tidy in a case study.
04. Product-Led Growth & Conversion
We work directly with your engineers to ship A/B tests on pricing pages, sign-up flows, activation moments, paywalls.
Trigger-based flows, segmentation, value-based optimisation, retention loops. Customer.io, Braze, Klaviyo, Loops. We're tool-agnostic.
We model LTV per segment, CAC payback per channel, contribution margin per cohort. The numbers a board actually defends in a meeting.
We sit with PMs and engineers as collaborators. We do not lob tickets over the wall.
05. Fractional Team
You work with one senior operator week to week. They show up to your standups.
Paid, CRM, analytics, creative. One engagement covers the surface area, not the silos.
An operator who reports into your CEO or VP of Growth, embedded in your sprint cadence.
Your engagement is with NF3. We employ the specialists and carry the delivery risk. One contract, one invoice, no IR35 question.
06. How it works
Option A
We run your performance marketing as your growth team. Strategy, media buying, creative, reporting, all under one roof. Fixed monthly fee, scoped to your stage.
Best for businesses that want senior operators owning paid, CRM and creative without building the internal team to do it.
Option B
One of our team embeds with you for an agreed number of days per week. You get a named operator working inside your business on a specific lane: paid, CRM, lifecycle, creative.
Best for businesses that already have an in-house growth lead and need senior firepower in a defined area.
Both engagements are contracted with NF3. We employ the team, handle delivery, and own the outcome. You get senior people inside the business without off-payroll or HR overhead. For finance: one supplier, one invoice.
07. Who we work with
Founders and growth leaders at B2B SaaS, marketplaces and consumer brands spending £30k to £2m a month on acquisition, or building toward that number.
If your next 12 months of growth are the ones that need to land, we should talk.
08. How we compare
A traditional agency sells account-managed retainers where the partner you met in the pitch hands the work to a junior team. NF3 puts a former Head of Growth on every engagement and keeps them there for the duration.
A freelance specialist is brilliant in one channel and silent in the others, and the IR35 question sits with you. NF3 covers paid, CRM, conversion and analytics under one contract with one supplier, with the off-payroll question removed.
Hiring an in-house Head of Growth is a six-figure annual cost, takes months to recruit, and locks you in. A NF3 fractional engagement gives you a senior operator inside the business inside two weeks, with the option to scale up or down month to month.
09. FAQ
A retainer is NF3 running a channel or set of channels for you, from strategy through to reporting. A fractional engagement is a named specialist from our team embedding inside your business for an agreed number of days per week. Retainers suit businesses that want senior operators owning the work. Fractional suits businesses that already have a growth lead and need firepower in a specific lane.
Usually within two weeks. Discovery call, one-page SOW, kick-off the following Monday. We have onboarded clients in seven days when the brief was tight.
Per engagement. For paid, that's typically contribution margin, payback period, and incremental revenue. For product and CRM, it's conversion rate lift on the experiments that ship and downstream retention. We agree the success metric on day one and put it in the Friday report from week one.
You do. Ad accounts, dashboards, creative files, audience data. All in your name from day one. We are operating your stack on your behalf.
A standard B2B services agreement between your company and NF3, with a one-page SOW per engagement. We're happy to send a template before the discovery call if it helps.
Engagements are priced based on scope and the number of days per week. A full retainer running paid, CRM and creative across a single business sits at the higher end. A fractional specialist in one lane sits at the lower end. We share a price band on the discovery call once we understand the scope.
Yes. NF3's client base splits roughly across the three. B2B SaaS clients have included Fyxer and JAAQ. Marketplace clients have included DELLI and Stasher. Consumer brand clients have included MOB, Lifted, Mother Root and No Logo. The founders previously led growth at Deliveroo (marketplace), OYO (marketplace), Fat Llama (marketplace) and across SaaS portfolios at TikTok and Google.
London, UK. We work with clients across the UK, Europe and the United States. Most work runs remotely with weekly in-person time when a client is London-based.
NF3 was founded by Alex Sowter and Ellie Ivanova. Alex was previously Head of Growth at DELLI, UK Growth Operations Lead at Deliveroo, Growth Manager at Fat Llama (Y Combinator) and the first UK marketing hire at OYO. Ellie was previously at TikTok, where she built TikTok strategy for Nestle, Mars, Huel and Suntory, and at Google, where she audited more than 100 internal media campaigns across EMEA.
An agency retainer is NF3 running a channel as your growth team, from strategy through to weekly reporting. A fractional engagement is one named NF3 operator embedded inside your business for an agreed number of days a week, working in your tools and showing up to your standups. Both are contracted with NF3 GROUP LTD, which removes the off-payroll and IR35 question that comes with a sole-trader fractional hire.
Nf3
30 minutes with Alex or Ellie. We will tell you whether NF3 is the right team for what you are trying to do, and if we are not, who is.