6  Who’s at helm of firm Twitter nowadays? (3)

 9  Wander around space for cashier (6)

10 Well-known motor racing’s over before noon? That’s untrue! (8)

11 Going crazy, elect Blair or mad third-party representative (7,8)

13 Something cheesy from Kismet with vocal parts transposed (4)

14 Treat cholera in tank, primarily to sterilise (10)

16 Samey bits of privet multiplied and scattered (10)

18 Disney character’s not unknown to make blunder (4)

19 Government ministry team noting awful drive maintenance (15)

21 State, ‘I hope it upset head of athletics’ (8)

23 In Austria, how north-eastern region’s capital is? (6)

24 Get rid of a European holding vote (3)

25 Request certain gratification (8)

 2  Destroy no tree with 24, clear? (9)

 3  Attractive Yves and Chas occasionally seen in aquatint (3-8)

 4  I don’t believe where Castro’s food ended up (7)

 5  Root crop belonging to Kingsley Amis (3)

 6  Gripes about peelers being peeled (5)

 7  Person with telescope fixed on my tax errors around first of April (1-3,10)

 8  Ailment I see end in confusion (6,8)

12 Old German settler changed two tens where stalls are found in squares (6,5)

15 Dressing for kippers? (9)

17 I put up with cutting ends from original for repeat (7)

20 If time’s right, yours could be this flower (5)

22 A burst of music! (3)