Coffee Break Cryptic

22 April

Across

1 Agree to keep in touch (10)
7 Some Northern Ireland actors get depressed (8)
8 Evangelist making an impression (4)
9 Error made by fielder (4)
10 Carry on upsetting priests (7)
12 South American or possibly Nigerian ant (11)
14 Seeks food for a long time (7)
16 A young lady in glasses (4)
19 Parasites preserved in primeval iceberg? (4)
20 Five imps are turning into blood- suckers (8)
21 Teenager given the French perfume after a party (10)

Down

1 Birds sound like doves with empty tummies (5)
2 Right conclusion? That's ripping! (7)
3 Some refused a mouldy cheese (4)
4 It's pitiful when father gets the twitch (8)
5 Possible means of identification? (5)
6 Quietly Ron is taken off to jail (6)
11 Break arranged in travel (8)
12 Who's a pretty boy? A Mafia boss is! (6)
13 Fancy a John Lennon song? (7)
15 Change people in advertisement (5)
17 Fish detected by its odour? (5)
18 Birds, half of them American (4)