4  Saga about marriage vows retracted or only fitfully observed (8)

 9  Send stopwatch back (5)

10 Tehran gig becomes riotous assembly (9)

11 Condition lad can get periodically (4)

12 Article with no name attributed thus? (4)

13 Restaurant with seating on the inside (3-2)

15 A number finding middle of fairway after teeing off (7)

16 Crown prince expected to return (4)

19 Gemstone ring presented to friend (4)

20 Palin's roaming round edge of Everest, encountering such folk? (7)

23 A way of working with metal before battle (5)

24 Flash operator has paparazzi targets recoiling (4)

25 Wake up in prison (4)

27 Being affected by drink, let's say (9)

28 Where drug-takers go for a fix (5)

29 Poet's sonnet composition extremely neatly penned (8)

30 Man is nothing before God (6)

 1  E.g. Dutch resistance involved in cracking Enigma Code originally (8)

 2  Bond film being sent up (8)

 3  Commitment of husband goes against the grain (4)

 5  Writer takes small toll after clear warning to imitators (6,7)

 6  Potter eyes thrown plate (10)

 7  Neat, tidy and mostly well-ordered (6)

 8  Convincing one's fellow man? (6)

10 Commander of combined armies and legions (13)

14 Ornate logotype on covers of glossy study of ancient civilisation (10)

17 Historic flight engineer? (8)

18 A writer's attributes (8)

21 Boy's first boon companion, Fred? (6)

22 Speaker in office is dull (6)

26 Darwin's first four geological periods (4)