- Date of Birth26 Apr 2003
- Height1.81m (5' 11)
- Weight105kg (16st 7lbs)
Theobald-Thomas played academy rugby for Worcester, who he made his senior debut for in a Premiership Rugby Cup fixture in 2021.
The hooker represented England at age-grade levels and was selected in the England Under-20s squad ahead of the 2023 Under-20s Six Nations.