CAA info site . . . . . . . . . . . .
This might be heplful :
SRG 1202: Form for the Transfer of Medical Details to the UK Aeromedical Section for a Change of State Licence (SOLI) | Publications | CAA
Probably best and simplest to stay within "english-speaking" territory. When medical details need translating and certifying all sorts of problems and delays become possible. !