Across
1 Polish last of jewellery, a precious stone (4)
3 Amateur demanding expenses, no matter what (2,3,5)
10 This musical instrument could be graduate’s shortly (7)
11 Large animal seen in stream in Indian state (7)
12 Bulb lit up unexpectedly (5)
13 Felon aims at sea for a British Crown possession (4,2,3)
14 Think about chapter on model (11)
16 Am leaving city on the Trent for ailing part of London (7,4)
21 One gets them in Scottish town, right away, mostly (2,3,4)
23 Girl in French city (5)
24 Plan revealed railway track (7)
25 Leader of outfit helping to make a speech (7)
26 Flat harlot refurbished, notwithstanding (3,3,4)
27 Son thrown in fountain for a joke (4)
Down
1 Dubious beer at a discount (6)
2 Quartz, perhaps, used in bar of a magnificent Roman building (9)
4 Tenor saving money for annuity scheme (7)
5 Fielder on by mistake (3,4)
6 Just the levy for one with a potbelly? (11,3)
7 Auction fetches millions in state capital (5)
8 Produces small chess pieces (6)
9 Headlining excellent TV police series (7,3,4)
15 A rose, for example, worker planted in row (9)
17 Most senseless, two homes being occupied by first letter (7)
18 Boat almost left with unstable load (7)
19 What a nark may do is endless (3,3)
20 Sounds like the type of ring for a young bird (6)
22 Decisive defeat round end of August upset school (5)
