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Growth Marketing Consultant, London

Hire a senior growth marketing consultant in London with 20 years of experience - and a full collective of channel specialists behind him.

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Barri Coen - Growth Marketing Consultant - London

GROWTH MARKETING CONSULTANT

Barri Coen

Phone:

Email:

Socials:

  • LinkedIn

Work Locations: 

London, Hertfordshire, Essex, Middlesex and Remote

Experience level:

20+ years of digital marketing, 13 years with startups, 9 years freelancing / contracting

Growth Marketing specialisms

I'm a classic Full-Stack Growth Marketing Consultant based in London and Hertfordshire, with expert-level skills in a number of areas and advanced experience in a number of other marketing channels, to ensure I can happily take charge and do a great job of those as well.  

I specialise in launching, optimising and scaling startups from ideation stage and seed funding to further investment and/or sustainable growth.  

My primary focus is on ensuring growth across acquisition and throughout the funnel. 

Expert-level Marketing Experience

Marketing Strategy & Planning

Conversion Rate Optimisation

Marketing Budgeting & Forecasting

Data & Analytics

Marketing Campaign Management

Lifecycle Marketing

Project Management

Advanced-level Marketing Experience

PPC & Social Advertising

Affiliate & Partnership Marketing

Search Engine Optimisation (SEO)

Content Marketing

ABOUT BARRI COEN

Growth marketing specialist with 20+ years of marketing experience

I started in marketing in 2003 at Aston University Students' Union. This was quite a baptism of fire in how to manage the marketing for a vast range of products and services.

 

Anyone familiar with student unions knows that they have welfare services, elections, retail outlets, publications, bars, restaurants, live music, events and much more. If ever there was a perfect grounding in marketing, this was it. The downside was that finding that type of variety anywhere else was a challenge.  The closest that I could find was going agency-side.

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So I then went agency-side at Wunderman, then at DAZN (then known as Perform) and Universal Music Group over the next 5 years.  I found the variety I was looking for but not the impact. I didn't feel like I was making enough difference. 

That led me to startups and my first, Festicket, in 2013. Three years as their Head of Marketing and first marketer, we went from zero to series B and €25M in annual turnover in 3 years. It was quite a journey. This also marked the point where I became more of a Growth Marketing specialist

After a year as CMO for Yogaia, a yoga on-demand streaming service, I was made redundant which led me to start Rise - Growth Marketing Collective, and have been working as a Fractional CMO / Head of Growth and Growth Marketing Consultant ever since. 

20 years ago, the term "Growth Marketing" didn't exist but, quite organically - because of the nature of the business I've worked with and the challenges they've faced - I've become an archetypal Growth Marketer, just with a solid grounding in traditional marketing.

I've been developing my skills relentlessly and have a wealth of experience helping startups and SMEs — based just north of London, working with clients across London, the UK and beyond.

My clients

Some examples of  work

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Home Management | PropTech | App

We stopped buying installs and started buying users who stay.

A brand-new app, no marketing team, three ad channels with no history. Installs were cheap and worthless — so we rebuilt the funnel around people who actually set up their household, and let the cost per install rise.


Some numbers:

30% → 69% install-to-account   · Cost per account down 40%

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WXO

Membership Body | Education | Web

From incremental growth to applications tripling in a year.

The World Experience Organization's membership was stagnating. We audited the function, rebuilt the roadmap, and stripped the friction out of the application funnel.

Some numbers:
Membership applications up 200% YoY · Revenue up 60% YoY

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miDrive

Driving Lessons | Marketplace | Web

Compounding 10–18% growth, every month, into the next funding round.

We led growth in-house: cross-channel acquisition against aggressive targets, with CPA falling and unit economics improving as volume scaled — through to acquisition by The AA.

Some numbers:
10–18% monthly growth in users and revenue · 300,000+ learners across products

Choosing a growth marketing consultant in London

London has no shortage of marketing consultants.

 

Most are good at one thing; the difficult part is working out whether that one thing is what your business actually needs.

 

Having sat on both sides of this - hiring marketers in-house and being hired as a consultant - here's what I'd look for.

Consultant, agency or freelancer?

One channel to fix, hire a good freelancer.

 

A full marketing function to run, and the budget for it, an agency can work.

 

The gap in between - you need strategy plus execution across several channels, but not forty hours a week of it - is where a consultant fits. It's also where most startups and SMEs actually are, and it's the gap Rise was built for: one consultant leading, senior channel specialists deployed behind them as the plan requires.

What to look for

Numbers, not adjectives.

 

Anyone can say "results-driven"; ask what they grew, from what, to what, over how long.

 

Ask who does the work - a common agency trap is being sold by a director and serviced by a junior. And ask what happens if the plan changes, because it will.

What it should cost

A decent consultant in London typically charges £400–£800 a day depending on seniority.

 

I work differently: most engagements start with a fixed-price planning project - an audit, forecast and growth roadmap, typically £750–£1,500 - so you know what each channel can deliver before committing to ongoing work.

 

No retainers, no minimum terms.

What my clients say

James Wallman

CEO - World Experience Organization (WXO)

"From the outset, Barri and his team were brilliant — consistently delivering weekly updates, structured experiments, and clear progress across all stages of our funnel. Their project management was excellent, with strong communication and a sharp focus on priorities that got results. In just a year, we saw a 60% increase in revenue and a 200% jump in applications — a strategic shift where volume took priority over yield. What impressed me most was Barri himself — genuinely great to work with and always delivering."

Frequently asked questions

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