Every clue has a valid one-word solution. In some cases, however, the word will not quite fit, and most of the clue must then be disregarded, leaving just an example of the word actually to be entered. Punctuation may or may not mislead. Chambers (2003) is recommended, but does not give one obsolete word (in OED and TEA) or one abbreviation (in OED).
ACROSS
1 Latch (maybe that's alien) (7)
7 Old-fashioned choir in 'Requiem', no English mass, unfortunately (5)
11 Abnormal growth - nothing major on cheek (6)
12 Anthony Trollope's first subsequent work (4)
13 Row in no-go area (3)
15 Note South Africa's Table Mountain? (4)
16 Idiot from Edinburgh to move faster towards Glasgow with oomph (5)
17 Why I'm special at heart - I'm quaint (6)
18 Constellation, one named after Copernicus (6)
19 Item in weekend supplement (3)
22 Triad member - one with power from East (4)
23 One-time priest, viz Ramsey, staggering about at home (8)
27 Cutting edge of science - science comes first, OK (8)
29 My American girl! (4)
32 Yachtsmen in western Scottish port (3)
33 Invaders from Denmark monsters? 75% maybe (6)
34 Cabinet take in 'old' party! (6)
35 Lecturer's novel theme (5)
36 Web site lacked content (4)
37 In King Lear, I feature in alchemy (3)
39 Ruler - monarch goes nuts (4)
40 Vulture? Alternatively, Mr. Rachman? (6)
41 Worn thread found inside hassock (5)
42 Baptize in accordance with principles of good ecumenism? (7)
DOWN
2 Glen drowned in the Adriatic? (3)
3 Union card, a sign of protest? (5)
4 After analysis of smoke, find new particle (relatively small) (6)
5 Midshipman's not tight (4)
6 Curve overturned carriage - Victoria? - in Texas (8)
7 Question viewers in Perth and Adelaide? (5)
8 Discomfort arising from seasickness on the SS France? (6)
9 Stolen goods - almost everything gone (8)
10 Unusually wide, for example (5)
11 Extremely small hill east of Paris (6)
14 Whangs miser violently (5)
20 Grease monkey - no amateur - endlessly wasted paraffin (8)
21 Girl has joint before eating during Thursday afternoon (8)
24 Golden anniversary's opening of amber liquid! (5)
25 Rose is looking ill (6)
26 Child's mother initially loved the monkey? (6)
28 Self-catering nuts help nobody (6)
29 Gripe about dialect: no hint of Estuary (5)
30 Close caught by slip (5)
31 Creditor's a trader (5)
34 Sagitta's first visible after thirty days, and Lizard? (4)
38 King Henry initially a glutton (3)
To enter the competition send your entry (answers in list format) to derek@crosswordcentre.fsnet.co.uk before the 1st May 2005. The first correct solution picked will win a copy of Chambers Crossword Completer which has been donated by the publishers.