Nf3
We grow marketplaces and consumer brands.
Paid media, ad creative and CRM run by two former Heads of Growth, with backgrounds at Deliveroo, TikTok, Google and Fat Llama.
A free 30-minute call where we look at your ads and funnel with you and name the three biggest leaks.
You'll work directly with founders Alex and Ellie.
Trusted by
Client results
Grew GMV 35% year on year for a UK consumer marketplace.
Nf3 client. January to August 2026, against the same months in 2025.
Took Meta for a consumer app from £0 to £100k a month in five months, profitably.
Nf3 client.
Creative
Recent ads we have made.
A few recent ads for our clients. Press play on any of them.
Scouty
Upload the reference, find the real location
- 9:16 vertical
- 10s
Appear Here
Et si vous ouvriez à Londres pour Noël ?
- 9:16 vertical
- 22s
Appear Here
12 months. Not 12 years.
- 9:16 vertical
- 7s
Sound familiar?
- Ad spend keeps growing, but customer acquisition cost is growing faster.
- Nobody trusts the attribution, so every budget decision turns into an argument.
- ROAS looks fine in the dashboard, but contribution margin hasn't moved.
- Your ads fill one side of the marketplace while the other side runs short.
- You need a senior growth lead, but a full-time Head of Growth doesn't make sense yet.
That's exactly where we come in.
Services
What we do.
Nf3 is a London-based growth marketing agency founded by two former Heads of Growth. We run paid ads, website conversion and email marketing for marketplaces and consumer brands.
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Paid ads management
Meta, Google, TikTok and LinkedIn ads planned, built, run and improved every week, with tracking that shows which ads actually bring in sales.
More on paid ads management
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Website conversion and email marketing
Get more of your visitors to buy or enquire, and bring customers back with email and SMS that runs on autopilot.
More on website conversion and email marketing
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A senior growth lead, part-time
An experienced growth marketer working inside your business a few days a week, for a fraction of the cost of a full-time hire.
More on a senior growth lead, part-time
Not sure where to start?
A free 30-minute call where we look at your ads and funnel with you and name the three biggest leaks. If we're not the right fit, we'll say so.
You'll work with us, not a junior team.
More about us
Alex Sowter
Founder
Former Head of Growth at DELLI. Previously at Deliveroo, OYO and Fat Llama (YC).
Ellie Ivanova
Founder
Former TikTok and Google. Built TikTok strategy for Nestlé, Mars, Huel and Suntory.
Ellie, before Nf3
- At TikTok: took revenue 2x year on year for Nestlé, Mars, Huel and Suntory.
- Doubled a Shopify store's conversion rate in 30 days, without touching pricing.
Our team has built growth systems at
Talk to Alex or Ellie directly.
A free 30-minute call with a founder, not a salesperson.
How we work
We start at the customer
Most agencies start at the creative. We start with the people who buy, then keep going round. Each pass through the loop makes the next batch of ads cheaper to produce and more likely to work.
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Step 01. Understand your customers
We talk to your customers to find out why they really buy.
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Step 02. Make lots of ads
We turn what we learn into lots of ad variations, fast, using AI-assisted production.
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Step 03. Scale what works
We cut what doesn't work, put budget behind winners, and improve every week.
FAQ
Questions founders ask us.
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How much do your services cost?
It depends on the scope and how many days a week you need us. We share a price band on the discovery call once we understand what you need.
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How soon will I see results?
You'll see early learnings within the first few weeks. Most accounts need 60–90 days of testing to find what reliably works, and we report progress every week.
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Who do you work with?
Marketplaces and consumer brands that are spending on paid media, or ready to start, and want senior people running it. Our clients include two-sided marketplaces, consumer apps and food and drink brands.
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Who owns the ad accounts and creative?
You do. Ad accounts, dashboards, creative files and audience data are all in your name from day one.
Nf3
Find out where your growth is leaking.
A free 30-minute call where we look at your ads and funnel with you and name the three biggest leaks. You talk to Alex or Ellie, not a salesperson.