Cryptic crossword No 3,547

Across

1. Confuses to join the small man (6)
2. US agency on paper can be cold (3,5)
3. Ridiculed free within act (7)
4. Keeps an eye on the lizards (8)
5. Parent who sounds very distant (6)
6. Policeman and Churchman together is one in charge (8)
7. Almost slowing down by doing a spot of gardening. (6)
8. Unknown top man is a spy (6,5)
9. Give evidence at trial provided unknown (7)
10. Bury an eye for chat show host (11)
11. Cut into pieces, I have entered and trembled (8)
12. Behind like seabird (6)

Down

1. Gain one city to get another (10)
2. Listeners hear car and political party (10)
3. Visit spider residences for information (8)
4. Against part of a pleasant impersonation (4)
5. A brief look rests broken leg to find naughty children (4)
6. Included in the football team at Wormwood Scrubs (6)
7. Sadly Tina dies for small delicacies (8)
8. Legume in other words can be worn on the head (6)
9. Note follows decay in learning method (4)
10. Cosy warm place obtained by sacking the entire team (8)
11. Be cautious to seize vehicle starting eastwards (4,4)
12. Troubled hardy plants, not all, may require water from these (8)
13. Large part of foot, including tungsten can be ridden for enjoyment (3,5)
14. Subject is truncated, not us (4)