7  Point is central to discussion, or theoretical? (5)

 8  American militia member, he's exceptionally lacking in stature (9)

10 Position taken against leaving European lake (6)

11 Figure of speech a mother mistaken to keep quiet (8)

12 MP worries about women sacked in plant (8)

13 Strip, having retired drowsy, becoming naked (4)

15 Vessel breaks, spills vegetables (7)

17 Bank's red line for City trafficking is most important (7)

20 Unprecedented to enclose such a delightful place (4)

22 Advanced hunger oddly vanished eating heart covered with breadcrumbs (2,6)

25 Boat in dock to the west of Irish islands (8)

26 Call for return of open coal fire inconsistently half-ignored (6)

27 Deceiving former Lib Dem leader, to wit implicated originally (3-6)

28 Sun disappears from covering area of open country (5)

 2  He executes a spectacular feat training Ann's mutt (8)

 3  Tribespeople opting occasionally to cast out every other pair of families (7)

 4  Lump I let spread, affecting many parts (8)

 5  Place where devotees gather, seeing European record equalled in upset (6)

 6  Key senior officer (5)

 9  Duck out of boozer often (4)

14 Determine accuracy of scales, interrupting supply briefly (9)

16 Prospect of country imprisoning soldiers (8)

18 Which singer is producing a traditional Fiddler on the Roof? (8)

19 Preserving a town close to the Thames (7)

21 Downgrade status of river fed by Test (6)

23 Dull characters ultimately in boring manor house party (4)

24 Terracotta perhaps, it's of modest value to potter (5)