This crossword No. 27715 clues and answers were published on Fri 11 Jan 2019 and the puzzle can be visited by following The Guardian Cryptic Crossword No. 27715 link.
All Across Clues and Answers:
9-across – Number one from one of two : ETHER
10-across – He noticed creeping destruction of cultural identity : ETHNOCIDE
11-across – Rejected wordplay quietly sent back by Paul or edited : UNPOPULAR
12-across – Transient prime : BRIEF
13-across – Prime suspect in deal with Government : LEADING
15-across – Perhaps fire English workers allowed outside : ELEMENT
17-across – Boatman finishes article on primes : THEME
18-across – Nameless type of paint, the first to mark wood : ELM
20-across – Proposal from cockney woman : OFFER
22-across – So, prime suspect is to swear oath? : PROMISE
25-across – Go back to EU, generally friendless in retreat : RENEGUE
26-across – They could kill & maim, say : NINJA
27-across – Teach two nurses to take on part of the crossword : ENLIGHTEN
30-across – Perhaps using skis, with the French slopes around them : WHEELLESS
31-across – Prime made out to include another : SEVEN
All Down Clues and Answers:
1-down – All possible orders of prime numbers : MENU
2-down – Boatman’s helm is prime mover about tacking east at first : SHIPMATE
3-down – Spring and Fall : TRIP
4-down – Wrap leading edge : NEGLIGEE
5-down – Prime impeachment : CHARGE
6-down – Trump’s usual response to criticism, Donald’s leadership heading off trouble twice as stock index falls one point : DOUBLEDOWN
7-down – Limited by metal casing in computers etc : FINITE
8-down – Perhaps a prime, cut from cube efficiently : BEEF
13-down – Enjoy yourself! I’ve gone out to get drunk : LITUP
14-down – Be alive in time to be reborn for certain : INEVITABLE
16-down – Prime every other T-shirt, even : THREE
19-down – Preach new realism about love : MORALISE
21-down – Sawn-off gun raised: it is held by prime suspect on run : FUGITIVE
23-down – Betrays no hiding place for anything less than a pound : OUNCES
24-down – Prime and irrational number? Large primes can’t be this : ELEVEN
26-down – Prime number — up to zero : NOWT
28-down – Heartless visitor delivers blow : GUST
29-down – Zero is new factor for all primes : NONE
This crossword has in total 33 where 15 are across and 18 are down.