Plain Puzzle 6 by Ximenes

ACROSS 1 Vital obstruction practised in Leap Year (8) 7 Pull about from the North West? (4) 10 A bumper, and Bill goes west for a duck (12) 11 A decidedly prickly pear? (9) 13 Dickensian ticket-porter, old-womanish? (6) 15 May make you forget, but will it make you itself and wisr? (4) 16 In which the Coles put up a hot show, one hears? Lit 'um first, of course! 16) 17 Inclined up North to be pound-foolish? (5) 18 Be good enough to make a noise like Cnut (5) 20 Temporary feature of the Ephoralty (5) 22 South African Bay, nearly all Portuguese (5) 23 Removes the cause of a lesion (6) 25 Your comment on a morning when you've got to get down to it all round? (4) 27 Winged words written down are rousing (6) 29 It's turned, to replace winter woollies? (9) 30 Diana loved him, though so backward, paltry and vulgar his style (12) 31 Black with yellow spots - huzza! (4) 32 The pointed end of a log  (8)

DOWN 1 You and I can go up on foot, being amphibious (4) 2 'Let not the grape go to the head' (Old French maxim) (12) 3 Red dandy assassinated (9) 4 Girl and boy danced merrily together (6) 5 Murder good music and suffer accordingly (5) 6 Better than kicks for starting cars (4) 7 The African tribe are in the tower! (6) 8 Even M.P.s reduced to what we all get (12) 9 Lost at bridge but just had to applaud (8) 12 Where Aeneas made his bed (5) 14 They're fine jumpers, but one of them is a very poor horse in flat country (9) 15 If this fruit contains hydrogen, you can get toffee from it (8) 19 Lambs fed by birds (5) 21 Colour specialist from Milano (6) 22 A benedict, extremely efficient (6) 24 Bonito family in King's Head (Nineveh) (5) 26 A cask for the directorate (4) 28 Black market butter! Hush! A little each! (4)