burn tests
From my experience you'll need testing to FAR 25.853 / CS 25.853
(FAR for FAA, CS for EASA)
Airline services in manchester can do this but it may cost a few £££ for a one off test, they do testing for airline seats of multiple qty's normally.
The old CAA burn test house approvals are now req'd to bE per AQAS
standards under EASA.
cheers