1: Flower - say, in Victoria's province - to raise (9)

6: Rapidity with which heat's dissipated (5)

9: Argue about something boring (5)

10: Indian chief fending off some respected Turk (7)

11: Clearances for the first couple of characters to find answers. (11)

13: Call initially communicates real yearning (3)

14: Prepare for onset of torrential downpour (5)

15: One in Canada, peut-tre? (7)

18: Simplest to find English in kinky siesta (7)

19: Drive carefully and live (5)

21: Bumped into yours truly at junction (3).

22: Girl mostly into turning inside out - it's never ending! (11)

23: Sibling rivalry's beginning - worry about it (7)

25: Emblem of sovereignty that was a quarter-pounder? (5)

26: Performer causes agent to lose head (5)

27: Vulgar and insipid (9)

1: From memory, next to courage (2,5)

2: Conducted fight in tent, it's clear (11)

3: Vegetables are chickens? (9)

4: See, you are a cad. (3)

5: Rifles protect lady from 16-down overhead (11)

6: Broken shaft ends? (5)

7: Sounds like a bright child (3).

8: Furies, in ancient Greece or Ireland? Certainly! (7)

12: Exchange concealed proprietary knowledge (5,6)

13: Privy to accessibility (11)

16: Discourage trendy princess's affectation (9)

17: A short bird-man climbed in Africa (7)

20: Feet of people who get talked about (7)

22: Void three stones (5)

24: Choose to take the top off (3)

25: Cronkite, Bradley, and Safer's first network (3)