Cryptic crossword No 29,646

1Olden (i.e. retro) housing owner? No (6) 1 across. Olden (i.e. retro) housing owner? No. 6 letters.

5King doing a U-turn on primary headwear (8) 5 across. King doing a U-turn on primary headwear. 8 letters.

9Major city’s society put up hospital with computer technology (8) 9 across. Major city’s society put up hospital with computer technology. 8 letters.

10It’s routinely filled by a minor agent with relief, perversely! (6) 10 across. It’s routinely filled by a minor agent with relief, perversely! 6 letters.

11Cold outbreak between flights here prompts emergency action (5-7) 11 across. Cold outbreak between flights here prompts emergency action. 5-7 letters.

13Reinforced housing data (4) 13 across. Reinforced housing data. 4 letters.

14Who’s bothered about mite when performance starts?

(8) 14 across. Who’s bothered about mite when performance starts? 8 letters.

17Artist’s mountain resort (8) 17 across. Artist’s mountain resort. 8 letters.

18Look, one’s in pieces (4) 18 across. Look, one’s in pieces. 4 letters.

20Stiff tongue that reveals your true feelings? (4,8) 20 across. Stiff tongue that reveals your true feelings? 4 letters and 8 letters.

23Optical feature’s nucleus almost within reach – almost (6) 23 across. Optical feature’s nucleus almost within reach – almost. 6 letters.

24Weight of detailed, misshapen rocks (8) 24 across. Weight of detailed, misshapen rocks. 8 letters.

25Epic character extracted dues – so, yes, heartless (8) 25 across. Epic character extracted dues – so, yes, heartless. 8 letters.

26Lionel’s cracking surface decoration (6) 26 across. Lionel’s cracking surface decoration. 6 letters.