Cryptic Clues

ACROSS
1 Made changes after pirate left with second prize (6,5)
7 It illustrates a moral point when Norm visits backward island (7)
8 Herb travels around America in a banger (7)
10 Girl is close to a league record (5)
11 Ampleforth's Head volunteers to take a look immediately (2,1,6)
12 Narrow boundary set by newspaper boss (7)
14 TV producer rang new girl (7)
16 Sing about English plant (7)
18 Each time Dale managed to be shot (3,4)
19 What 24's do for those who report the misdeeds of others (9)
21 Supports son with money (5)
22 Mysterious tale set in this city (7)
23 Author to regret keeping broken dish (7)
24 Scotland's foremost Conservative to utter Queen Elizabeth is a liar' (5-6)


DOWN
1 Circus performer and star turn admits working at General Motors before the 1st of November (9)
2 Able to remove student's tag (5)
3 7/11 of 9 is green (7)
4 Essential article on Godolphin's top horse (7)
5 Morecambe and Wise for example are paired to produce an effect (6,3)
6 Gain knowledge from Lear? Nonsense (5)
7 Gay prelates assembled by the entrance to heaven (6,5)
9 Gemstone carried by man perhaps from Ireland (7,4)
13 Score before the first wide ball with 3 sixes and a four (6-3)
15 A kiss received by Hero's lover from this man! (9)
17 Doctor Grey includes everything in a long passage (7)
18 Film studio boss finally supports the Spanish actor (7)
20 Charges for boys carrying nothing (5)
21 This fellow graduates at 49 (5)