I know I'll raise some eyebrows, but I'm using a Char bull on Char heifers, and don't get up at night. Just check about 10:30 and again at 5:00. I'd use this bull on British Heifers too. I'd probably do a night check on them until he'd proved himself. He is out of a trait leader for calving ease direct.
I'l edit this to add that this is the 3rd season, and 60 of 61 unassisted births (one slump, not pulls), so they don't have to be Angus :wink: