This crossword No. 27878 clues and answers were published on Sat 20 Jul 2019 and the puzzle can be visited by following The Guardian Prize Crossword No. 27878 link.
All Across Clues and Answers:
1-across – See 12 : ESPIONAGE
6-across – See 26 : CLAMP
9-across – What’s answered when one’s going woof or oink, say : THECALLOFNATURE
10-across – Criticise one of those billed : RAIL
11-across – Vessel behind it travelling west during wonderful trip : ACTIVATE
14-across – Yellow and black half of nut in aromatic plant : LEMONBALM
15-across – Engineers told you so! : THERE
16-across – Problem supporters backing United : SNAFU
18-across – Silent voices restored originally, Lebanon rebuilt : NONVERBAL
20-across – Small, small, small amount of money invested in tea plant : SWEETPEA
21-across – Second: first no more! : STOP
25-across – Modern time, looking back, in roistering and a crash? : ROARINGTWENTIES
26-across – Two items of seafood pinched by cat, not one — unfortunately one can’t get away with it : WHEEL
27-across – Best turkey drunk, according to Spooner? : TOPFLIGHT
All Down Clues and Answers:
1-down – Fragrant substance produced when badger scratches head : ESTER
2-down – Politician’s bearing setting one up for devotion : PIETISM
3-down – Fine wine unopened : OKAY
4-down – Those at the front in detachment lining up and climbing over the hill in Scotland? : AULD
5-down – Under oath, a bond for removal : EFFACEMENT
6-down – A scream muffled by shout for old competitor : CHARIOTEER
7-down – A meeting about usual borders getting praise : ADULATE
8-down – Gradual increase ultimately in diamonds, a thousand in ring : PIECEMEAL
12-down – Guardian site desperate to bandage wound around paper’s leader — investigation of some concern? : INDUSTRIAL
13-down – Fill out forms with age in green, originally : GAINWEIGHT
14-down – Tons carried by girl, hideous lump to lift a back-breaker? : LASTSTRAW
17-down – See 19 : AVERAGE
19-down – Mean when in a temper initially, money handed over in card game beginning to escalate : BATTING
22-down – Put one in letter box? : POSIT
23-down – Exchange prisoners sent up : SWOP
24-down – Not entirely used up, culinary dye : ANIL
This crossword has in total 30 where 14 are across and 16 are down.