This crossword No. 21912 clues and answers were published on Wed 31 May 2000 and the puzzle can be visited by following The Guardian Cryptic Crossword No. 21912 link.
All Across Clues and Answers:
4-across – Threads brought together, writing material up found in old jacket : DOUBLE
6-across – Put out about German finance : UPMARKET
9-across – Rather lame as contents of Telegraph on an issue, ie not OTT : WITHIN
10-across – Present left during function over which there’s an icy reception? : SNOWLINE
11-across – List of accusations citing some bed-linen on the ward? : CHARGESHEET
15-across – After 1, squad provided full unofficial version : SWEENEY
17-across – See 8 : SURGEON
18-across – Back blackleg with some hesitation – not the best for the job : SECONDRATER
22-across – Extra cover available as insurance against cold weather? : OVERCOAT
23-across – See 1 : SAUCER
24-across – Back in form to play a game of football? : DEFENDER
25-across – See 21 : POISED
All Down Clues and Answers:
1-down – Initially, it appears unusually far-fetched and otherworldly : FLYING
2-down – Start to moderate a kind of free-for-all : OPENSEASON
3-down – Vital material flowing here – force it on US audience? : TAPWATER
4-down – Finish drinking with actors, a bit depressed : DOWNCAST
5-down – Stupid dunce, holding creative skill up, not yet found out? : UNTRACED
7-down – See 4 across : KNIT
8-down – I’m employed to keep planes, etc in good condition : TREE
12-down – Building up a tall story for listeners, usually : SKYSCRAPER
13-down – Green kids’ treats – they’re the tops! : VERTICES
14-down – An extreme case, where people don’t normally see the light : INFRARED
16-down – Short time with nobody about – given a bit of a rocket? : NOSECONE
19-down – See 9 : REASON
20-down – See 15 : TODD
21-down – Personally keeping balanced view of unusually deep fossil : SELF
This crossword has in total 26 where 12 are across and 14 are down.