Across
8d
(and 8 Down) It reproduces music from short film about Returning Officers' credentials (7,4,6)
The little devil in Kim Philby (3)
Smart con (5)
Battle upset Bacall and Gardner (9)
Originally Utah Saints to perform outside room - creating event in the desert? (4,5)
Without any covers, band aimed for cartoon style (5)
Supply steroid - must get charged (7)
Summit in capital following Conservative vote (6)
Broadcast which group of islands is on course (6)
Hoy cycled after great sporting cry (5-2)
Work satisfied over rate (5)
Accept too readily, obvious sign of age (9)
Position from health professional - with temperature, use Celsius/Kelvin instead of Fahrenheit (3-6)
Shadow Chancellor finally visiting Mumbai's content (5)
European artist's time (3)
Grandpa's prepared to swallow pill and somehow try to make do with fresh air? (6,5)
Down
Where to pay VAT without initially having done enough sales (4,4)
Marmite's made in a compound say, BBC, Independent etc (10,5)
Occasionally, cadet soldiers provide protection (5)
Volunteers burst boil over bit of dirty paper (7)
Type of calendar, found, counting backwards in hexadecimal/sixteens (7)
Price maybe accepted by heads of Champions League holding up business for winger? (9)
Curiously Gary Numan and I get honour right after Independent and i (9,6)
See 1 Across
Unsettled by silly grin getting under one's skin (9)
Cantankerous Hawtrey's essence invested in Carry On Abroad (8)
Game's purer when Oklahoma knocks out Wisconsin (7)
Part of showbiz article describing ex-actor's odd parts (7)
My site ruined 18 (6)
Upstage 18, 8 (5)
Type letters or click words in the clue