Squidie,
I am a similar age and had similar circumstances (had a couple of years away from flying due medication). Got revalidated no bother with the helpful guidance of my local club and instructors, literally a couple of check-flights then LPC.
Admittedly working on the airfield made things easy with regards to keeping track of rule changes, procedures & RT, however as others have said it all comes back pretty quickly anyway.
All the best with revalidating.