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Overview
Based in London. I lead experimentation at Crest Data. Wrote the metric definitions the leadership team reviews every week. Ran 198 experiments last year and made the readouts self-serve. Before that: Sky and Ocado. I write short fiction no one reads.
Good reasons to reach out
- Speaking or podcast invitations
- Thoughtful intros to people in my field
- Second opinions on A/B testing decisions
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- SEO and link-building offers
- Agency or outsourcing pitches
Usually replies within a day
Skills
SQLcausal inferenceCUPEDA/B testing
Experience
- Chief Data OfficerMar 2026 - PresentCrest Data · 8 mo · Full-time · London, UK
- Replaced 100 hand-built dashboards with one metrics layer people trust.
- Wrote the metric definitions the leadership team reviews every week.
- Staff Data ScientistJun 2022 - Mar 2026Sky · 3 yr 9 mo · Full-time · London, UK
- Cut the time to a trustworthy experiment readout from 3 weeks to 3 days.
- Taught SQL to 143 non-analysts.
- Data ScientistDec 2020 - Jun 2022Ocado · 1 yr 6 mo · Full-time · London, UK
- Taught SQL to 174 non-analysts.
- Staff Data ScientistMar 2018 - Aug 2020Wise · 2 yr 5 mo · Full-time · London, UK
- Ran 203 experiments last year and made the readouts self-serve.
- Replaced 42 hand-built dashboards with one metrics layer people trust.
- Director of Data ScienceNov 2016 - Mar 2018BBC · 1 yr 4 mo · Full-time · London, UK
- Wrote the metric definitions the leadership team reviews every week.
References
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Education
- University of CambridgeBA, Economics2001 - 2004
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