Sir Sorrell
Co-Founder at S4S Ventures
Greater London, England
Sir Sorrell, Co-Founder at S4S Ventures is an active investor based in Greater London, England. This profile covers what Sir Sorrell backs, at which stage, and how founders can reach out in 2026.
- Investor type
- VCPEFounderInvestor
- Stages
- Early Stage VentureSeed
- Invests in
- Marketing & AdTech
- Location
- Greater London, England
- Typical check
- $375K
How to reach Sir Sorrell
Angels and operators like Sir Sorrell reply to specific, personalized notes that show real traction, not mass blasts. Build a verified list, write a note that fits their thesis, and track replies, all on Round Funded.
Reach active investors like this one
About this profile
This profile is part of Round Funded, an investor database and outreach platform for founders. It covers 60,000+ active VCs, angels, family offices and accelerators with verified contacts, lets you send pitches from your own Gmail, and includes a free Data Room for your raise. How this data is built.
Cite this page
Round Funded. "Sir Sorrell." Round Funded investor database, updated September 9, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/sir-martin-sorrell
Frequently Asked Questions
What does Sir Sorrell invest in?
Sir Sorrell invests in Marketing & AdTech, typically at Early Stage Venture and Seed. Match your sector and stage, then reach out with a personalized pitch.
What stage does Sir Sorrell invest at?
Sir Sorrell typically invests at Early Stage Venture and Seed. Lead with traction that fits the stage when you reach out.
What is Sir Sorrell's typical check size?
Sir Sorrell typically writes checks around $375K. Use it as a signal for whether your raise fits their stage.
How do founders reach investors like this?
Round Funded lists active investors with verified, professional contact details for signed-up founders. Filter by sector, stage and location, then send a personalized pitch from your own inbox.
What is Round Funded?
Round Funded is an investor database and outreach platform for startup founders. It lists 60,000+ active investors with verified contacts, filtered to recent investment activity, and lets founders send personalized pitches from their own Gmail, track replies, and share a free Data Room. Round+ starts at $99 per month with a 3-day trial.