Hello,
in Poland in our HEMS company pilots with age close to 60 are sent for additonal medical checks....EASA give some exception and if You pass You can extend Your ability for single pilot CAT (like our HEMS) for 2 years...after that time once again medical check for another 2 years. LAst check is for 1 year up to 65 years old. Please verify that procedure in Your EASA land..
Greets
Jacek