First correct solution received by the end of November wins the usual prize.

ACROSS
1 You Welsh on Sunday: into S&M and cleavage! (6)
5 Bloodsuckers’ marks (5)
9 Worth a touching infringement? (4,5)
10 Study renal failure (5)
11 Verbose, disturbed, right looker (8)
12 My pug’s had an accident and is in plaster (6)
13 Long boa, twist it 9 down (7)
15 A brief tramp will fix a boot (7)
16 Reportedly amusing drink (3)
17 Not right, terribly wrong, 7,24’s free home? (7)
19 Confused Tory lay-persons in power (7)
21 America lost a skirmish, the 18 waged war here and Russia won it (6)
22 Open fire after hearing a line at the hairdressers? (8)
25 A 9 down lost last two to 24 near 13 (5)
26 Shy loner, silly nit Trevor’s back (9)
27 Pulls sledges and croaks (5)
28 A secret I reveal holds…give up? (6)

DOWN
2 So, uncle might get help (7)
3 Milan 9 down shortly meet Bury (5)
4 For hire: lux car. Yearn badly (9)
5 Settlement won’t settle, wants to be a 24? (4)
6 Awful lay-by (no WC), a 9 down (6,3)
7,24 NYC, Sais and Tawe flow, a 9 down (7,4)
8 This isn’t working (12)
9 Wearing a 30.48cm suit, dance with wolves? (8,4)
14 They dig culture without sounding superior (9)
15 From now on there are f,faults (9)
18 Ridiculous shit – rib these people (7)
20 At 51, a panacea is called for in Chartreuse (7)
23 Critical reaction? Take time to improve (5)
24 See 7