Welcome to 4 Cryptic. I have set this puzzle and therefore am not looking for individual answers.
4 clues 4 individual answers,once solved take the first and last letters of each answer jumble them and find the Anagram.
There is no time limit, this is INDIVIDUAL EFFORT
1 Maintains a return pressure (7)
2 I leave the law to the big guns (8)
3 Perfect voice for a trio ? (6)
4 Its nonsense to compel a number (6)
Happy solving