3  See 10

 7  A cup spilled over meal, it's my fault! (3,5)

 8  Geologist seen returning in English omen (4)

 9  Touch down in Flanders (4)

10/3       After school breaks up, old age finally seems normal (10,8)

12 Scrawl script he wrote oddly vacant (7)

13 Every other diary entry? (3)

18 Mine rock returning contained minerals (3)

20 Wishes about record funds in advance (7)

23 Toughen up a number of engineers with self-restraint (10)

24 Thesaurus entry for biblical hunter? (4)

26 Volunteers left cold (4)

27 Bond over a french union member (8)

28 One stage recreated prehistoric period (5,3)

29 Discredit amigo to end peace in Spain (5)

 1  Old sailor goes after degree in igneous rock (6)

 2  Work alone, without one's precious gem (4)

 3  Channel carrying jazzy trio (8)

 4  Vitamins, consume one a day (7)

 5  Refusal to wear middle-eastern spirit's raincoat (6)

 6  Bony ducks surround South Korean city endlessly (7)

 7  Mother breaks ulna by hand (6)

11 First start climbing a rugged exposed limestone cliff (4)

14 Mineral springs up around lake in mountains (4)

15 Outspoken craving (7)

16 Geological fault after chromium and uranium explode (8)

17 Serve up plant in coffee cup (6)

19 Hear ace shuffled in disorder (7)

21 Workhorse wearing first-class cross talisman (6)

22 One in four zealots first to take back religious education (6)

25 Rising tide shows change (4)