Coffee Break Cryptic

22 June

Across

1 Beginner in Athens (5)
4 Long poems involving spice? (5)
7 Loose chips are heavenly (8)
8 A cereal, we hear, that's crooked (4)
9 Ancient city not completely destroyed? (4)
10 Garment daughter ripped off (7)
12 Social occasion - central bit in backyard? (6,5)
14 Sit and read awkwardly with legs apart (7)
16 Small animal in boat (4)
19 Captain in submarine movies (4)
20 Examination, as soon as it's finished (4-4)
21 Times leader censures pitfalls (5)
22 Fibre used in optics is altered (5)

Down

1 Porter right on the ball (5)
2 Group of soldiers taking philosopher forward (7)
3 A colleague of Castro is hurt (4)
4 Get away having swallowed half of loaf or slice of meat (8)
5 Characters from China needlessly silly (5)
6 Theatre work that could have you in stitches (7)
11 Mortality figures may be a complete write-off (4,4)
12 Family tree reveals this sudden visit (7)
13 Judges playing conkers? (7)
15 Woman distributing hoard (5)
17 Revolver we'll hear (5)
18 Cast about for laws (4)