This crossword No. 21637 clues and answers were published on Wed 14 Jul 1999 and the puzzle can be visited by following The Guardian Cryptic Crossword No. 21637 link.
All Across Clues and Answers:
1-across – 3kw, perhaps, to make a strong nation redundant? : FIREPOWER
6-across – Ultimate blow for the Electric Company at the Lizard? : GECKO
9-across – 3-ed MPs met Church of England twice; I lost the drift : SELECTCOMMITTEE
10-across – Betted, backing out-of-form steeplechaser up from Hitchcock film : DIAL
11-across – The devil within the law is not expressed : IMPLICIT
14-across – Female students, one of them in Scots county till sell-by date : SHELFLIFE
15-across – Butterfly provides clue about prince and king getting badly stuck between hard and soft : CHALK
16-across – 10 ephah arrival : COMER
18-across – Hope tuner can make it on cue : THEREUPON
20-across – Brought up by unexpected U-turn at sign of danger : NURTURED
21-across – See 26 : FLAG
25-across – Rides out with complete article about a wing from home base : RESIDENTIALAREA
26-across – Yellow iris the police, without worry, backed with most of … : WATER
27-across – … setting of precious stone: there’s poetry in set of sail : SILVERSEA
All Down Clues and Answers:
1-down – Browsed around the Guardian, ready for lights out? : FUSED
2-down – Get a new tenant for free : RELEASE
3-down – Choose a burner of papers? : PICK
4-down – See 3 : WICK
5-down – One who belongs in the grass between 24 and 23s : REMEMBERED
6-down – Diagram of crossword requiring key when one’s stuck : GRIDLOCKED
7-down – Dealt, with two aces, the first of two wales : CETACEA
8-down – Passed green brought in from a tree : OVERTAKEN
12-down – See 10 : MFORMURDER
13-down – Literary lions, classically, are troubles wished on brides : LITTLEONES
14-down – Back protest by centre forwards? : SECONDROW
17-down – Impressionist causing upset to treacher during assembly : MORISOT
19-down – Missile discovered by plough : POLARIS
22-down – Fruit from Antigua vastly overrated : GUAVA
23-down – See 15 : HILL
24-down – See 15 : BLUE
This crossword has in total 30 where 14 are across and 16 are down.