Open to opportunities

Callum Stewart

@callumstewart

Message

Marketing leader driving subscriber growth, engagement and retention across media, streaming and sport.

United Kingdom

Message

What I'm looking for

I seek a senior marketing role where I can scale streaming or media brands, lead teams, drive subscriber growth and deliver measurable revenue.

I am a results-driven marketing leader with over a decade of experience in media, streaming and sport, known for growing subscribers, reducing churn and delivering multimillion-pound revenue through acquisition, engagement and retention strategies. I build and lead high-performing teams, create data-driven frameworks, and manage complex stakeholder relationships across content, talent and commercial partners.

Highlights include growing a streaming service from 17,000 to 85,000+ subscribers, delivering major global streamed events, launching apps and campaigns that drove significant user growth, and consistently meeting financial KPIs. I am passionate about mentoring, access, and developing long-term strategies that scale brands and maximise lifetime value.

Experience

Work history, roles, and key accomplishments

Current

Head of Marketing

Current

National Theatre

Oct 2023 - Present (2 years 3 months)

Built and lead the NT at Home marketing team, increasing subscribers 382% to 85,000 and reducing churn from 13.9% to 6.8% within six months while improving minutes watched and US base growth.

Retention Strategy Digital Marketing Audience Research Product Marketing Campaign Management Stakeholder Management

Content & Marketing Lead

Audible

Feb 2022 - Oct 2023 (1 year 8 months)

Led content marketing for Audible's tier1/2 titles, driving chart-topping podcast and audiobook launches and managing multimillion-pound partnerships with Acast, Twitch and PodBible.

Content Marketing Campaign Management Partner Relations Performance Marketing PR Audience Growth Analytics

SVOD & Brand Manager

A+E Networks

Mar 2021 - Feb 2022 (11 months)

Managed SVOD campaigns across FAST channels, growing subscribers YoY (36% on CI Play, 70% on History Play) and generating £3m through sign-up marketing while reducing CPSU from £20 to £3.68.

Campaign Management Performance Optimization Channel Partnerships Revenue Growth Acquisition Cost Per Signup Reduction

Head of Marketing

Boxxer

Oct 2020 - Mar 2021 (5 months)

Built foundational marketing processes and user journeys during COVID, defined target audiences within boxing and entertainment, and established community growth strategies.

Strategic Planning Community Building User Journeys Campaign Setup

Head of Marketing, Sport

News UK

Jan 2020 - Oct 2020 (9 months)

Managed sports marketing across six brands, driving £159k revenue and 125,025 entries in a promotional campaign while maximising digital listening and ad revenue KPIs.

Sports Marketing Campaign Management Revenue Generation Data Collection Digital Listening Promotion

UK Marketing Lead

Livi

Jan 2019 - Oct 2019 (9 months)

Led UK marketing for a DTC healthcare start-up, delivering campaigns that grew the UK subscriber base 534% YoY during the launch period.

Growth Marketing Media Planning Performance Tracking Start Up Marketing Acquisition

Senior Marketing Manager

Discovery Communications

Oct 2017 - Jan 2019 (1 year 3 months)

Ran ATL and digital campaigns including Katie Price series and grew TLC YouTube from 300k to 1.7M subscribers, delivering $1.3M in ad revenue and launching Discovery Kids app in Singapore to #2.

ATL Campaigns YouTube Growth Digital Strategy Revenue Generation International Marketing Audience Development

Marketing Executive

Sky

Jan 2016 - Oct 2017 (1 year 9 months)

Owned rugby Autumn Internationals campaign delivering 10,000+ Sky Sports upgrades and 12M+ digital impressions; led cross-channel engagement strategy with strong email performance.

Sports Marketing Campaign Execution Digital Advertising Email Marketing Social Media

Marketing Executive

BBC One

Sep 2014 - Jan 2016 (1 year 4 months)

Owned end-to-end marketing campaigns including The Apprentice (7.3M viewers, +20% YOY) and Peter Kay's Car Share, achieving record iPlayer and linear launch audiences.

Campaign Management Audience Growth IPlayer Promotion