Cryptic
21A Sheriffs men on time for hot milk drink (6) * E * * * T
22A Back down on the generator, some going west(6) * * N * * *
23A Ailment started giving satirist grief (9) *T * T * * * I *
7D Big order, but first made more obvious (4, 5) *R*T, *A * **
18D Told of direct channel (6) S * * * * *