Gwilym Sims-Williams.

Writer. Producer. Strategist.

Hey, my name’s Gwilym 👋

I help brands and creators build successful YouTube channels.

As Head of YouTube for Bryan Johnson, I grew the channel from 70K to 2M subscribers.

As Ali Abdaal’s chief writer I scripted 20+ videos, hitting 15M+ views, and wrote 60+ issues of his newsletter.

Other clients include Ramit Sethi, Species AGI, Polaroid Foundation, Oliur/Ultralinx, Matt Gray, Jesse Enkamp, and the University of Cambridge.

I studied English at Cambridge, and graduated top of my year at Edinburgh.

Gwilym’s Newsletter

For tactical YouTube analysis, sign up to my newsletter.

What to expect:

• ✍️ Advanced scriptwriting tips
• 🗺️ Strategic analysis of recent videos + trends
• 👨‍💻Advice on running a world-class YouTube team

Want to work with me?

Here’s how I can help:

🔬 YouTube Consulting - Hire me to consult on your YouTube channel or scripts, either as a one-off or on a recurring basis.

Contact me about your project here, I’ll aim to get back to you within 48 hours.

What people have said:

“Gwilym is an amazing writer, strategist and all round YouTube pro. Gwilym helped with a range of things from scripts, strategy and my personal newsletter. Couldn't recommend him highly enough!” - Ali Abdaal

“Gwilym is an excellent scriptwriter. His scripts are well-researched, easy to film, and delivered outstanding results. 100% recommend.“ - Ramit Sethi