Across
1Sister can, shaken up, holds what clears a square (9)
6Put off digging, then settle the matter (9)
11LA rave winds down, leaving only the grubs (6)
14Computer maker's little valley (4)
16Left in the drained swamp: everyone, I, a gun and gold (9)
21A group keeps going, editor gone — and it's left to rot (9)
22A Greek letter, then Capone — it comes round once a year (6)
23Advertisement introduced by Society, and how depressing (3)
24Note something nasty, reworked — the Chancellor's growth forecast, say (7)
27Time demands — jobs to be getting on with (5)
Down
1Held close: chewed food, a duke, and a lead (7)
2Nationalist in the Urals? Only to be expected (7)
3Drapes hung anew across the centre pages (6)
4Live in reverse — what the other side always is (4)
5Used differently, and took legal action (4)
16Ava's old sailors, now the faces we wear online (7)
17Take it in, editor — the one thing no inquiry ever is (7)
18The Almighty holds back the water, and out comes the oath (6)
19Masses — snot, turned about (4)
20Spare it and spoil the child; found in Labour oddity (3)
24Fine, then consumed — and that was always coming (4)
25Sent packing? Rearranged, it is home (4)
26A load of nonsense from the gym — the six-pack (3)
Through
1Thrown out to fool the radar, and the worthless part of the grain (5)
2New York meets London, in stockings (5)
3Agism rewritten as a Greek letter — or the internet's ideal male (5)
4Printer's measure, then attempt: what you are filling in now (5)
5Ride the waves, or the web, sounding like a serf (4)
6First attempt at conscription, and a bit draughty (5)
7Steam, redirected: the software that ate the meeting, and the sides that play (5)
8Republican joins the Ides for some free trips (5)
9Charged particles, championed in sport (4)
10The last bit of the weekend (3)
11Look! An advertisement. What a burden (4)
12Gran, upset, called (4)
13A learner between two articles, in the French style (3)
14Sprint, or the punctuation a politician hides behind (4)
15Guided — or the light that replaced the bulb (3)