Theo Chavannes

I build focused SaaS tools for UK professionals. Based in London.

I'm a French software founder and machine-learning engineer living in the UK. I run Chavannes Ltd (UK company 17198260, incorporated May 2026), an independent software company with no outside funding. Each product does one specific compliance or operations job for a clearly named UK audience — accountants, FCA-regulated firms, small employers, landlords and housing providers — and does it properly, rather than trying to be a platform.

Products

• PenaltyProof

  Live

  Filing-deadline alerts for UK accountants — monitors Companies House, VAT, payroll and Self Assessment deadlines and warns 30, 14 and 7 days before they're due.

  Details · penaltyproof.co.uk

• CoverProof

  Live

  Section 250 compliance for FCA-regulated UK firms — SM&CR gap analysis, zero-login declaration cycles and board-ready evidence packs.

  Details · coverproof.co.uk

• StaffClock

  Live

  Staff credential expiry tracking for UK businesses — right-to-work checks, CSCS cards, DBS checks and SIA licences, with escalating reminders before expiry.

  Details · staffclock.co.uk

• FixRoute

  Live

  Property repair management for self-managing UK landlords — tenants report repairs via a shareable link, contractors get scoped job links.

  Details · fixroute.co.uk

• EvidenceTrail

  Live (early)

  Awaab's Law evidence packs and statutory-clock tracking for UK registered housing providers, alongside their existing repairs system.

  Details · evidencetrail.co.uk

About

I started building these tools in 2026, after years working as a machine-learning engineer. The pattern behind all five is the same: a specific UK regulatory or operational obligation, a deadline or expiry that's expensive to miss, and a small tool that watches it so a busy professional doesn't have to. Everything is designed and built by me, end to end.

If you'd like to get in touch, email theo@chavannes.ltd or find me on LinkedIn.