Across
1 Good mimic could make one stare open-mouthed (4)
3 Typesetter in awfully poor sitcom (10)
10 Big city pub and clubs with no ale, surprisingly (9)
11 Mostly elegant town (5)
12 Maiden on mountain in Crete’s pointing to legendary king (5)
13 Head of precinct extremely upset about Irish detective (6)
16 Never-ending contest à la Tom and Jerry? (3-3-5,4)
17 Ambassador in West Germany in novel - author? (6,9)
20 We, entertained by young socialites? They’re socially inept! (6)
21 Row across river in German city (5)
24 Buddy (American) and I correspond (5)
25 Native of Lincoln checking ancestry? (9)
26 Appropriate to grieve over, say, a large sea creature (5,5)
27 Fail to hear young woman (4)
Down
1 Leave bishop, slapped, utterly astonished (10)
2 Dior happy to wear favourite semiprecious stone (7)
4 One blew on euphonium initially, then this? (4)
5 Mourn a VIP, a remarkable Finnish runner (5,5)
6 Potter’s creation, and urn squire with kiln forged, with hint of turquoise inside (8,6)
7 Girl from different habitat (7)
8 Telephone engineer circling number (4)
9 Pastoral events turned sour, resulting in uprising (8,6)
14 Obama broadcast includes bit of history, every single D-Day code name (5,5)
15 Wonky knees worry people from Manhattan? (3,7)
18 Indicating yes, theologian at home is brought in alcoholic drink (7)
19 With first-rate singing partner of Elton in Honolulu beach resort (7)
22 Favourite aspect of carnival (4)
23 Black bird of prey in a hollow (4)
Solution No. 2819