5  Chemical loses mass when poured into cup (7)

10 Cold fish in pit (6)

11 Impress popular writer (8)

12 Poor personal hygiene's good for convenience (3)

13 Banker's thickness displayed thoroughly (6)

14 Soft boy embarrassed about small sacs (8)

15 Wheat product not suitable for all's a botanist's concern (5)

16 It's Midtown (5,4)

19 Returning Liberal gets Tory leader hot having taken lion's share (9)

21 Small dishrags fraying at the edge lead to indolence (5)

24 A politician joins journalist to follow good man East on wild rampage (8)

26 Intelligence supplied by current university chaps (6)

27 Mohair regularly stroked by rower (3)

28 More active threat in uncontrolled fire (8)

29 Churchman starting to move up two grades provides ray of hope (6)

30 Dash insect between poles (7)

31 Bad publicity preceding Byron's work? (7)

 2  Meatloaf endlessly processed becomes grayish-brown colour (7)

 3  Polar team travels with no regard for time (9)

 4  Places surrounded by rest areas (6)

 6  Armies holding long-time prisoners (8)

 7  Revolting right replaces rational core (5)

 8  Eat crab salad in US night spot (7)

 9  Original premise (3,4,6)

17 California copper delayed workout (9)

18 First young Jew holds love for El Capitan's home (8)

20 Acting student endlessly improvising first two characters (7)

22 Deep sleep in hills after shocks (7)

23 Stop teacher getting sarcastic (6)

25 Considered return of French follows total retreat (5)