Our local peregrines fly off somewhere else for a few months to breed but i saw the male the other day(23rd) eating something then resting up on a church tower. Surely he should still be at the breeding site providing for young?
How can you be certain of the identity of any individual bird? Is the one that you saw really "yours"?
If it was "yours", given that you appear not to know where they nest, perhaps he is ether hunting further afield this year, or you don't happen to have noticed him in past years?
It would be normal for male peregrines to stay on their breding territory all year, even if they happen to use different parts at different times.
Any breeding birds will certainly be feeding young currently.