Anything relating to that would be in CAP 804.
FCL.025:
(2) The completion of the airline transport pilot licence (ATPL) theoretical
knowledge examinations will remain valid for the issue of an ATPL for a
period of 7 years from the last validity date of:
(i) an IR entered in the licence; or
(ii) in the case of helicopters, a helicopter’s type rating entered in that
licence.
The implication is the EASA licence. But the type rating can be on anything by the look of it.