It's actually for my DF to give to my DP (I know, I know, but DF is elderly & has limited shopping options, so buying a book through Amazon is a simple answer for him). He'd like something to wrap & we only do small presents, so ideally but not essentially in paperback.
DP reads lots of thrillers, but it's hard to know what he'd like but hasn't read. He's interested in history, likes things like the Bernard Cornwall Saxon books, has read all of William Boyd. Definitely not 'literary-books-in-which-not-much-happens' (hated Remains of the Day for example). Also definitely no SF or fantasy, it just bemuses him.