No. 610 by Cyclops
£100 prize to the first correct solution opened on 27th October 2017.
Across7 Carried by Elf, Labour leader thriving to a moderate extent (6,4)
9 See 27ac. 10 E.g. got over Trump's beginning (3-2)
11 Intellectual pissed by Boris's opening argument (8)
12/13/15 All the Conservatives in a frenzy about hot replacement for shaky leader? Not very – it's in perpetual crisis (8,6,7)
17 Make it hotter, love – quick! (2-5)
20 Red-faced, filling female top with gold (6)
22 Tube out of action? Hush up! (4,4)
24 Digressive leader ultimately dawdling (8)
26 Sporty car produces piles over bum's inside (5)
27/9 Obsolete Conservative needs, er, time? Sure thing (4,4)
28 Angela's opportunity to stagger back? (10)
Down
1 See 25dn. 2 Empty tacky sweet talk: new description of Trump? (6)
3 Solution put on orifice for a sort of surgery (7)
4/23 Victory line, maybe, such as May's shelved grammar school plan? (8,6)
5 Crusty old clot in clueless cabinet (4)
6 Gasping to reveal someone's sexuality? Keep off the booze! (3,3)
8 Screwed terrier, biting very English, fetching type (9)
14 Unreliable NATO deal negotiated to restrict cocaine (9)
16 Toolbox company, Germany, wants scrap (8)
18 Lending establishment's bound to go after dupes (8)
19 Saying "Naff image, right, covers party leader?" (7)
21 Pissed, revealed sensitive info. (6)
23 See 4dn. 25/1 One into bondage, ugly sort, may show your words to be false (4,8)
An 
