Creative marketing agency

Big thinking for small brands.

A collective of forward-thinking strategists, designers, and creatives. We fuse data, creativity and technology to unlock new avenues of growth for brands worldwide.

White modernist architecture against a clear blue sky
fifteen:four/ Brand Strategy/ Social Media/ Content & Video/ Paid Ads/ Email Marketing/ Events/ Graphic Design/ fifteen:four/ Brand Strategy/ Social Media/ Content & Video/ Paid Ads/ Email Marketing/ Events/ Graphic Design/
What we do

Everything you need, none of the fuss.

Strategy, brand, content, social, email, ads, events, design and video. The full picture, on a retainer or as a one-off project.

Every discipline is led by a specialist with at least five years' experience in that field. Senior expertise across the board, without you having to hire, brief or manage it.

We work as part of your team, consulting, strategising and delivering, for clients across the globe.

Kickstart your growth

The groundwork everything else is built on. We get clear on who you are, who you're for and what sets you apart, then turn it into positioning, messaging and a tone of voice your whole team can use. Decisions get faster, and everything you put out starts to sound like the same brand.

What's included
  • Brand positioning
  • Messaging framework
  • Tone of voice
  • Brand guidelines

We plan, create, publish and manage your channels every month, so your team stops losing hours to captions and scheduling. Every post ties back to a business goal, and monthly reporting shows what's working and what we're changing.

What's included
  • Monthly content calendar
  • Content creation and scheduling
  • Community management
  • Monthly reporting

From short-form clips to brand films and photography, we handle concept, script, shoot and edit. Storytelling is our edge, so your content gives people a reason to care rather than just filling a feed.

What's included
  • Brand and campaign films
  • Short-form social video
  • Photography
  • Copywriting

Campaigns across Meta, Google, LinkedIn and TikTok, planned, built and optimised by paid media specialists. You set the budget and the target, we test what works and report back clearly, so you always know what your spend is returning.

What's included
  • Campaign strategy
  • Ad creative
  • Audience targeting
  • Testing and optimisation
  • Performance reporting

Newsletters, launches and automated journeys that keep customers coming back. We build the flows once and they keep working in the background, nurturing leads and driving repeat sales while your team gets on with the day job.

What's included
  • Email strategy
  • Design and copy
  • Automated flows
  • List segmentation
  • Performance reporting

Launches, conferences, dinners and tours, planned and delivered from first idea to final follow-up. We manage the suppliers, logistics, promotion and the day itself, so you can show up as the host, not the project manager.

What's included
  • Concept and planning
  • Venue and supplier management
  • Event promotion
  • On-the-day delivery

Pitch decks, social assets, print, packaging and campaign artwork, all designed in line with your brand. One team that already knows your brand means quicker turnaround and no re-briefing a new freelancer every time.

What's included
  • Pitch decks and presentations
  • Social and digital assets
  • Print and packaging
  • Campaign artwork

Expert thinking without committing to full delivery. A standalone marketing plan, a fresh pair of eyes on what you're already doing, or ongoing strategic support while your own team handles the execution.

What's included
  • Marketing audits
  • Standalone strategy plans
  • Launch and campaign planning
  • Advisory days, booked in advance
A white photo studio set with lights, palms and a folding chair Campaign work
Laptop, tablet, keyboard and coffee laid out on a white desk Brand work
How we work

Part of the team. Not just a supplier.

Retainers start with a six-month minimum, long enough to make a real difference. Projects run for as long as the work takes.

One point of contact. Clear communication. No agency fluff. We care about the work, and we care about your business.

A desk in soft window light with long shadows The team
Curious?

Ask your AI about us.

Don't just take our word for it. Pick your assistant and we'll hand it the question.

What clients say
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Working with 15:4 has truly felt like having a business bestie. It's like having a person who supports your vision a 110%, cheers you on and tells you the hard truth that you need to hear.

Former customer
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15:4 helped me communicate my vision to the world by creating my brand voice on socials and challenged me to invest time in quality content rather than 'quick fixes'.

Former customer
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15:4 helped me build, design and launch an entire online platform that I now use to reach more women with less of my time (but still with the same quality and vision I always had). It's freed up time for me to focus on what's important and helped me earn passive income which has helped my business so much.

Former customer
Ready to get started?
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Do you like what you see?

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A quick call is all it takes.

About

We care about the work.

Small agency. Proper strategy. No fluff.

Start a project
Phoebe Mayner on a call at her desk
Phoebe Mayner, Founder

Built to do it properly.

fifteen:four exists because I kept seeing the same thing: businesses doing brilliant work, with marketing that didn't reflect it.

I spent seven years in brand, communications and creative strategy, working with organisations from global media platforms to independent ventures and membership bodies, before starting fifteen:four.

We are a collective of forward-thinking strategists, designers, and technologists committed to disrupting the way brands evolve. By fusing data, creativity, and breakthrough technology, we unlock new avenues of growth and inspire audiences worldwide.

What we stand for

Values we actually live by.

Integrity.

We'll tell you when something isn't working - before you spend more money on it.

Strategy.

Content for its own sake isn't marketing. What are we actually trying to achieve?

Quality.

Fewer, better things. If we can't maintain our standard, we say so.

Relationship.

Most of our clients stay with us well beyond their first project. That's the bit we're most proud of.

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Sound like a fit?

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A 20-minute call is all it takes.

How we work

Brief. Build. Refine. Repeat.

A simple rhythm that turns big thinking into work that actually goes out the door. You stay in control. We do the heavy lifting.

Start a project
The process
01

Brief:

We start by listening.

A proper conversation about your business, your audience, where you want to go and what's getting in the way. We look at what you've already got, what's working and what isn't, then agree clear, measurable objectives together.

Objectives we can actually measure progress against

A clear scope, timeline and statement of work, so you know exactly what's included

02

Build:

Strategy that turns into real work.

We shape the strategy, then make it happen: positioning, messaging, content, campaigns and creative, produced by specialists in each field. You won't be left holding a strategy deck and a to-do list.

Strategy and creative direction

Content and campaigns, made for you and shared for sign-off

03

Refine:

Your feedback, built in.

Nothing goes out without your approval. Every deliverable includes two rounds of revisions, and we keep an eye on what's landing so the work gets sharper as we go.

Two rounds of revisions per deliverable

Your sign-off before anything goes live

04

Repeat:

Momentum, not one-offs.

Marketing compounds when it's consistent. We review progress against your objectives, learn from what the results are telling us and plan what's next, so each month builds on the last.

Regular progress reviews against the goals we agreed

Plans that adapt to results, not a plan set in stone

What to expect

Clear, calm and collaborative.

The practical bits, so you know exactly what working together looks like day to day.

Contact

A dedicated account manager

You'll have one dedicated account manager as your day-to-day contact, so you always know who to talk to and nothing gets lost.

Rhythm

Built around you

We agree how often we check in and report at kick-off, shaped around your workflow rather than ours.

Replies

Within 48 hours

Questions and feedback don't sit in an inbox. You'll hear back from us within 48 hours.

Approvals

Simple sign-off

We share work for approval and ask for feedback within five working days, so things keep moving.

Measurement

Your goals, not vanity metrics

We report against the objectives we agreed at the start. We can't promise results that depend on algorithms, but we'll always be honest about what's working.

Ownership

Your work, your accounts

Once it's paid for, everything we create for you is yours. Your social accounts, domains and platforms always stay in your name.

Ways to work with us

Pick the shape that fits.

Every engagement is scoped to your goals, so we don't publish a price list. You'll get a clear proposal setting out exactly what's included before anything starts.

Ongoing

Retainer

Marketing done for you, every month. A monthly fee covers an agreed amount of work. There's a six-month minimum so there's time to make a real difference, then it rolls monthly with 30 days' notice.

Defined

Project

A specific piece of work with a fixed fee, like a launch, campaign or brand refresh. Usually 50% to start and 50% on delivery.

Advisory

Consultancy

Strategy and a second pair of eyes for teams who can deliver in-house. A standalone plan, or advisory days booked in advance.

Ad budgets are paid by you directly to the platform, like Meta or Google, separately from our fees, so you always see exactly where your money goes. Our fees are quoted exclusive of VAT.

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Ready when you are.

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Tell us where you want to go. We'll come back with a plan.

Work

Selected work.

What we've been building with founders and organisations who wanted their marketing to match the quality of what they do.

Case studies
01

Lived Experience Speakers

The PICK Project
StrategySocialEmailEventsDesign

The brief

Lived Experience Speakers needed a joined-up creative marketing suite for their PICK Project, with a bold, minimal look that worked across social media, email and events, all true to their brand guidelines.

What we did

Built a full three-month marketing strategy

Planned the content calendar and produced the social media posts

Designed and built HTML email newsletters

Created branded graphics and event materials

02

Wonderful Leaders

Monthly retainer
StrategyContentCampaignsEvents

The brief

Wonderful Leaders needed a marketing partner who could keep their content consistent month to month while supporting major events, partnerships and new ways to grow.

What we did

Planned monthly content calendars and wrote long-form captions and contributor announcements

Produced creative for Summit 2026 events in Bradford and Hackney

Built the "Made to Make" sponsorship campaign with Premier Christian Media

Developed the "Still Waters" retreat plan for venture builders

Shaped a 12-month business plan spanning summits, mastermind cohorts, a CEO peer table, membership, retreats and podcast sponsorship

03

Roar Collective

Brand, growth and community platform
BrandingSocialContentPlatform build

The brief

Roar Collective needed a brand that matched their ambition, a stronger presence online and a dedicated home where their health, wellness and fitness community could come together.

What we did

Branded everything, giving them one clear, consistent identity

Grew their online presence across three platforms

Built an online health, wellness and fitness community platform from scratch

Populated the platform with content, ready for members from day one

3 platforms grown. 1 community platform built from the ground up.

04

FB Fashion Ball

Social media and live event
SocialEventsProduction

The brief

FB Fashion Ball wanted someone to run their social media and bring an ambitious, never-been-done-before event to life.

What we did

Ran their social media

Planned and executed the first fashion show ever held at Leeds First Direct Arena

A first for Leeds First Direct Arena: the venue's first ever fashion show.

Who we work with

Brands with something worth growing.

If you've built something good and your marketing hasn't caught up yet, you're in the right place.

Founders and entrepreneurs

Who are still too involved in every marketing decision and want that time back.

Small teams and start-ups

Who need senior expertise without hiring a full in-house department.

Membership bodies and networks

Who need consistent content, events and campaigns that keep their community engaged.

Speakers, creators and personal brands

Who want their voice to come through clearly, everywhere they show up.

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Could you be next?

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Let's talk about what you're building.

Team

Small team. Senior expertise.

A founder-led studio backed by specialists who each bring at least five years' experience in their field.

Phoebe Mayner, founder and CEO of fifteen:four
Phoebe Mayner, Founder & CEO

The thinking behind it.

Phoebe founded fifteen:four after seven years in brand, communications and creative strategy, working with organisations from global media platforms to independent ventures and membership bodies.

She sets the direction for the studio and makes sure everything we deliver is strategic, considered and sounds like you.

The specialists

Experts in every discipline.

We bring in the right people for your brief, so you get senior expertise in each area and only pay for what you need.

5+ years

Brand strategy

Positioning, messaging and tone of voice that give everything else direction.

5+ years

Copywriting & content

Words that sound like you, from captions to campaigns.

5+ years

Graphic design

Social assets, decks, print and campaign artwork, all on brand.

5+ years

Video & photography

Concept, shoot and edit, from short-form clips to brand films.

5+ years

Paid media

Campaigns planned, built and optimised across Meta, Google, LinkedIn and TikTok.

5+ years

Email & automation

Newsletters and automated journeys that keep customers coming back.

5+ years

Events

Planning, suppliers and on-the-day delivery for launches, summits and retreats.

How the team works

You'll have a dedicated account manager as your day-to-day contact, so you always know who to talk to.

Specialists are matched to your brief, so the people working on your brand are experts in exactly what you need.

Everyone works under the same confidentiality, data protection and ownership terms as we do.

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Let's build your team.

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Tell us what you need and we'll bring the right people together.

FAQ

Good questions.

The things founders usually ask before working with us. If yours isn't here, just ask.

You'll have a dedicated account manager as your main point of contact. The work itself is delivered by specialists who each have at least five years' experience in their field, matched to what your brief needs. We're responsible for everything we deliver.

Founders, small teams and growing organisations, from personal brands and start-ups to membership bodies and leadership networks. If you've got something worth growing and your marketing hasn't caught up yet, we're probably a good fit.

Our core services are brand strategy, social media, content and video, paid advertising, email marketing, events, graphic design and consultancy. Your proposal sets out exactly what's included, how much we'll deliver and what would cost extra. If you need something outside our core services, such as technical SEO, PR or a website build, we'll tell you up front and talk you through the options.

It depends on your goals and scope, so every engagement is quoted individually. Retainers are a monthly fee for an agreed amount of work. Projects have a fixed fee, usually 50% up front and 50% on delivery. Consultancy can be a standalone plan or advisory days booked in advance. Fees are quoted exclusive of VAT.

Retainers have a six-month minimum, because good marketing needs time to build. After that they roll monthly, and either of us can end things with 30 days' written notice. Projects have no minimum term: they run for as long as the work takes.

Nothing goes out without your sign-off. Each deliverable includes two rounds of revisions, and we ask for feedback within five working days so the work keeps moving.

We agree a rhythm of check-ins and reporting at kick-off that fits the way you work. In between, we'll reply to your messages within 48 hours.

We agree clear, measurable objectives before we start and report on progress against them, focusing on what matters to your business, like enquiries, sign-ups or sales, rather than vanity metrics. No agency can honestly guarantee results that depend on algorithms and markets, and we won't pretend otherwise. What we will do is be clear about what's working and what we're changing.

You do. Once it's paid for, everything we create for you belongs to you. Your social accounts, domains and platforms always stay in your name.

Ad budgets are paid by you directly to the platform, like Meta or Google, separately from our fees. You always see exactly where your money goes.

Sometimes, as a tool and never as a shortcut. Anything AI-assisted is reviewed and refined by a person before it reaches you, and we never put your confidential information into AI tools.

Absolutely. We can slot in as an extension of your team, or provide consultancy and strategy support while your own team handles delivery.

We have bases across the UK, in Yorkshire and London, and work with clients across the globe.

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Still curious?

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Ask us anything. We'll get back to you within 48 hours.

Start a project

Let's talk.

Four quick steps and we'll have everything we need to come back to you within 48 hours.

  1. 01The basics
  2. 02Practicals
  3. 03Services
  4. 04The nitty gritty
The basics

Let's start with who you are.

Let's talk practicals

A rough idea is fine. It just helps us plan.

Project or retainer?
Budget range (monthly for retainers, total for projects)
to
What do you need?

Pick as many as you like.

The nitty gritty

The more we know, the better our first conversation.

Got a brief? (optional)

Prefer email? team@fifteen-four.co.uk

Open