1: Perfect counter-spy equipment (3)
2: Driverless wagon approaches Y with great pains (5)
3: Rear oat variety as a way to break up the soil (7)
4: Break up the rock group from hell. (7)
5: Poles suffer internally - they're hard (5)
6: Hikers' path around Virginia is hard work (7)
7: Working up here? Not in the next episode (9)
8: Severely criticize cook (5)
10: Go up cedar's first branch (5)
13: Ship's official drinking tea with buyer (9)
15: Reportedly hoist Jeter of the NY Yankees (5)
17: Tranquillises extremely senile escorts (7)
18: Incomprehensible English is the sign of a professional (7)
19: Puzzle with no more significance abroad (7)
21: Challenged Ruby after district attorney (5)
22: Core principle of taxi-o-meter? (5)
23: Between them, both sides have time for a drink. (5)