Across
1970s clothing not very good on idiot (4,5)
Coral island where first twelve characters left (5)
I haven't cracked this one yet — but Fifteensquared have:
A TO L (the first twelve letters of the alphabet) + L
Wild stunt by footballer taking out centre (7)
I haven't cracked this one yet — but Fifteensquared have:
F[ootballe]R + ANTIC (a stunt)
Terminations from Iago and avengement, what do we have here then? (7)
I haven't cracked this one yet — but Fifteensquared have:
Last letters of iagO and avengemenT plus HELLO (what do we have here?), and the whole clue could be a desciption of the play
See 22
Charitable fund-raiser perhaps having bagged £0, mountain to climb at first (10)
I haven't cracked this one yet — but Fifteensquared have:
BEN (a mountain to climb) + O L (zero pounds, £0) in EVENT (a fund-raiser, perhaps)
Banks after bullion in French city (7)
Company entertained by short film from Hitchcock, pioneer of broadcasting (7)
Grouse beater’s work done then? Got you! (3,5,2)
13a
‘Latest’ read by anchors reviewed – here? (8)
Describe Scottish island to the west, only outsiders on there (7)
I haven't cracked this one yet — but Fifteensquared have:
Reverse of ARRAN + T[her]E
Undo chain? I can having escaped after wriggling, as escapologist (7)
I haven't cracked this one yet — but Fifteensquared have:
Anagram of UNDO CHAIN I less CAN
Somewhat horny, a large antelope (5)
Washerwoman’s Sunset Strip strip? (9)
Down
4d
No lady really keeping warm while cold down there? (3,3,4,3,2,8)
Aunt’s loo rebuilt for population of ghost town? (3,1,4)
I haven't cracked this one yet — but Fifteensquared have:
(AUNT’S LOO)*
Jam stain (4)
See 1
A positive picked up on the beach? (6)
17d
Do that and don’t talk dirty! (4,4,5,3)
Rank, porky dog (6)
Most gory Horrible Histories told, and brilliant after disembowelment (15)
I haven't cracked this one yet — but Fifteensquared have:
Anagram of HISTORIES TOLD B[rillian]T
South vanishing from US state, country sawn in half – as if by magic! (8)
I haven't cracked this one yet — but Fifteensquared have:
ALASKA less S + half of ZAMbia
See 6
Row in divorce city blowing up – funny (3-5)
I haven't cracked this one yet — but Fifteensquared have:
LINE (row) in reverse of RENO (US city famous as a divorce venue); “funny” as the definition is a noun: “he told a funny”
Aware about mark suggesting slip, something unpleasant found in canal? (6)
Flush lavatory, emptying beneath plane (6)
I haven't cracked this one yet — but Fifteensquared have:
EVEN (plane) + L[avator]Y – rather a weak clue as “flush” and “plane” have the same meaning, to the extent that the parsing would work either way round; though the lavatorial surface perhaps redeems it a little
Tongue inside your dungarees (4)
Type letters or click words in the clue