Oviously they wouldn't get the lump sum and immediate pension after 22 years service, but they would still be entitled to their preserved pension at 60. There was a case of an IRA man who was sent down for planting bombs in Rubbish bins in train and bus stations in the Nineties. Went to prison and did his time. When he was 60 he claimed a preserved pension for the time he had served in the Royal Signals.Depends on the scheme? Many cases of RAPC (and all other Regt and Corps) SSgt/WO2's getting caught with their hand in the till, getting found guilty and dismissed from service and losing their pension. I think there was a few MMA cases involving Sn Officers...........eeey, but that were back in'th day.
Things may have changed.
Another more recent case is the Jock Sapper who bombed his old barracks in Osnabruck.
IRA bomber claims pension.
A friend who was a SNCO in the RAPC in the eighties when Worthy Down was their Depot told me that they had a thriving chapter of their Old Comrades association in HMP Winchester.