OTOH, Wait till your nearly 80 ?
It's a boon if healthy to fly: using the CAA declaration is the bees knees & there's thousands (i.e. LAA & BMAA members) happy to be trusted to use a U.K. PPL or NPPL equivalent.
If you fly something gross and also wish to operate over other countries' I'd expect them to want more positive medical proof.
BTW. The CAA self dec. Form SRG 1210 has been printed off (all 3 pp's) after their acknowledgment came back last August and folded in a pocket of my Licence.
mike hallam.