4  Marriage is a mixture of lust and pain (8)

10 Belted out lyrics, rid of composed calmness (9)

11 Lava ultimately buries crypt (5)

12 Partner gaining International Match Point on complex deal with mirror bid (4-5,5)

14 I'm surprised, able to flip tortilla (5)

16 Probably no relish when initially tasting sandwiches (4,2,3)

18 Bind over male then stitch up for prescribed period (9)

20 Dog has itch on hard to reach area (5)

21 Unhappy state eating poorly-plucked duck? (4,2,3,5)

25 Continuing hush (5)

26 Calling to account for sailing closer to the wind (7,2)

27 Be responsible for boxing in small car? (8)

28 Manages to understand, Times clues finally cracked  (4,2)

 1  Using natural protection, half impregnate (10)

 2  With private support merriment mushrooms? (5)

 3  Communist dictator's embraces provided revolutionary love for family member (7)

 5  Beneath Friesian's back end lost milkmaid finally grasped... this? (5)

 6  State worker's thrown up outside bar (7)

 7  Have a ball scoffing cake in great quantity (9)

 8  Eats bananas to overcome hunger (4)

 9  Troubled daughter (Lear, middle of Act I) receives nothing  (8)

13 Steps hard? Try a different dance (10)

15 Eccentric chap, Scotsman or Asian (9)

17 Drag around - eek! - a hull (8)

19 Wave bat to Barmy Army, say (3,4)

20 Frock length? Man, your setter's clothing length's fashionable (7)

22 Head-over-heels, bird mounts game Indian statesman (5)

23 Spurs regularly run ragged by Gunners' right winger (5)

24 Way back, a Russian leader (4)