Cryptic crossword

Wednesday's puzzle...

ACROSS

1 How lightning appears immediately (2,1,5)

6 Screen what's found in one's blood (6)

9 A bit confused by the custom (3)

10 Seeking relief from reality while mass epic develops (8)

11 Put back about one French female and start to perform in the band (4,2)

12 Feel distraught and run away (4)

13 Reportedly heard another guy removing dry instrument (5-5)

15 Like independent candidate not relying on support (4-8)

18 Noted instructor (5,7)

21 Unfit doing exercises and making a discovery (7,3)

23 Smallest piglet coming out of turn (4)

24 Cereal one might have for breakfast in Switzerland (6)

26 In time less courteous gatecrasher (8)

27 Vehicle in the lead (3)

28 Of interest to the consumer (6)

29 Coming from cover do select excessive amount of drugs (8)

DOWN

2 Settle down at home with the Parisian (6)

3 Particular mental shape (5,2,4)

4 Parisian friends have aspiration for strict US sect (5)

5 Said funny-bone (7)

6 Insignificant amount of money in the office (5,4)

7 Barley found in grass left out (3)

8 Shaping woolly growth at home before midnight (8)

14 Subsoil (11)

16 Old numbers I have covering large area (9)

17 Rosy bud, runic variety (8)

19 Before midday if not in love with Cupid ...(7)

20 ... if not Len's upsetting us outside (6)

22 Tenth little bird he follows (5)

25 Cry from second former student (3)