A Founder’s Guide · England & Wales · 2026

The SEIS & EIS Playbook.

What HMRC actually looks for.

The patterns behind the rejections, the language behind the approvals, and the nine tests every advance assurance application is read against, written by the founder of the UK’s first SEIS fund.

What’s inside

Eight sections, 78 pages

  • 01Why most rejections happen
  • 02The nine tests HMRC actually applies
  • 03The red-flag language audit
  • 04What a strong application contains
  • 05A worked annotated example
  • 06Edge cases and judgement calls
  • 07When to self-submit, when to get help
  • 08About Seisly
78 pagesFirst edition · February 2026Published by Seisly · A product of Litigo Limited