Last two have got me beat. Assistance gratefully accepted.
16 down: Did sock initially have wrinkles stitched all round? (8) Have ?H???K?D
Only word I can think of that fits that pattern is shrieked but I'm convinced that's incorrect.
21 across: Do stuff with one who has been drilled? (8)
Have ???b?r?e
Airborne? Seaborne?
Many thanks in advance.
Enigma