7D. Brief union-is maiden showing prime regard for someone else (5) T-ISM.
5D. Busy person wants no marital arrangement involving in-laws (6) BE-NA-.
14. One sort of pistol about to be made from these impure metals (6) R-G---.
12D. Like a fox in Scotland needing rest after loss of tail (4) S--E(?).
Many thanks in advance. I'm going for a run in the rain.