Never a Crossword?

Here's your chance to win £25

Simply run a copy off on your printer, fill in all the answers, and send it by 28 February to:
The Editor, The Cleanroom Monitor,
North Tyneside College, Embleton Avenue, Wallsend, NE28 9NJ

The winner will be the first correct entry drawn after the closing date.

Across

1 To check regularly (7)
5 Emotional bond (7)
9 Forbidden in clean rooms (11)
12 Endeavour was this TV character's first name (5)
13 Necessities (5)
14 Electroconvulsive therapy (abbrev) (3)
15 To possess 1)
16 Closely woven silk (5)
18 Garlic flavoured species of onion (6)
22 Receptacle for lubrication (6)
26 Pre-metric runner of middle distances (5)
27 Notions (5)
28 Highly seasoned Italian sausage (6)
29 Ancient provincial Persian governor (6)
31 To establish beyond doubt (5)
32 A fool (slang) (3)
34 Stake (3)
36 View (5)
39 Mountain ranges in Russia (5)
40 The belief we know nothing beyond material phenomena (11)
41 Makes absolutely certain (7)
42 A young child (7)

Down 1 A religious sect founded by Joseph Smith (7)
2 Mother of pearl (5)
3 An opinion, principle or doctrine which a person holds as true (5)
4 To ramble about (4)
5 A bird such as the corn crake (4)
6 Musically soft (5)
7 Frequently (5)
8 The strain of twisting (7)
10 Vibrating within limits (11)
11 S2C2 version of one across represents one of these (11)
16 To pull, peel or tear off (5)
17 Sounds like a din (5)
19 Teachers group (abbrev.) (3)
20 Become ill (3)
21 Original equipment manufacturer (abbrev)(3)
23 - - - Lupino. Old movie star (3)
24 Dining, freight or sleeping (3)
25 Jolson's first name (3)
28 You'll get tanned here (7)
30 For a broken limb in Paris (7)
32 Motion with these in mesh (5)
33 Purport (5)
34 To construct (5)
35 A person and language from Sri Lanka (5)
37 Egyptian Goddess (4)
38 A trio gone wild (4)