16d, ?r??????, Conceited and brazen, holding progress. Up
21d, ??????, Economies upset firm producing wall covering.
22a , 3 words, 3.3.7. Create difficulties: request foreign currency with little time in hand .
18 d, U??????, Variable, , currently indefinite number supporting end of taxation in UK.
23d, ?????, Betty's opener, " I love flipping pancakes".
25a, S???r, Trail fighting men, heading off on return.
26a, ??????i?n, Tory involving a Liberal with it, I observe at the outset?.27 a, T???e??, Brown jelly having zero fruit.
28a, ????k?y, Cunning attempt to secure pound off small quantities of paint.