Help appreciated parsing these....
17a With papa intervening, children at university start career (5,2) - SPEED UP (Career)
It looks like 'Seed' (Children) + 'Up' (at Uni), but then P would have to be an abbr. for 'Papa'! - is that right?
20d Tailor married person who'll press a suit (7) - A?M?R?R (Admirer?)
I truly have no idea what is going on here.