Cryptic crossword

Across

3 Where putting the finish before the start leads to anger! (5) 8 Something to do with interest (5) 10 She's of some help to a space visitant (5) 11 Started the fire and left it (3) 12 Show how everyone gets a letter (5) 13 When it's cool out, run! (7) 15 Tries to take a girl around central Tooting (5) 18 Have polo ponies such ears? (3) 19 Because established at Epping? (6) 21 Half the side cried wildly for a golden goal! (7) 22 Those broken up mostly for scrap? (4) 23 Beat at golf, maybe? (4) 24 Playthings of a spoilt starlet? (7) 26 Of the people making a bad start in a test (6) 29 Father's girl (3) 31 Such boys aren't slow (5) 32 Encourage to give attention to a broken net (7) 34 One presenting a soldier with a piece of silver (5) 35 Whence tea may run freely (3) 36 Fishy means of measuring? (5) 37 See '38' 38 and 37 Being right in a new role, had he to fly north again? (5,5)

Down

1 Fruit of some long endeavours (5) 2 In major contests, let's bat cannily (7) 4 One of the first men to have a unit (4) 5 He does things in religiously correct order (6) 6 Maybe three can put you to sleep (5) 7 Short men (5) 9 From the pine, it's not a needle (3) 12 Shifty CIA plot of current interest (7) 14 A fancied flier (3) 16 They swim in waters around the Docklands centre (5) 17 Put on, dramatically (5) 19 It's used in flight (by the RAF out East?) (7) 20 That great explorer (5) 21 It carries water in many thousands of drops (5) 23 Rod's joint (7) 24 Weapon used by gunners at a landing place (6) 25 Part of an arable area (3) 27 It swims in an arch around a circle (5) 28 Instrument forming a bulge (5) 30 In short, she has very little money (5) 32 Only a brave man will give her a ring (4) 33 It means a shot at goal (3)