(4d) A character in Britain’s city of crescent’s has some bread. (5) B?T?H.
(15a) Here, one is more than half way round, of course. (5) T?N?H.
(21d) Yields a call for volunteers. (5,2) HA?D? U?.
(25a) Find your niche, no? All right. (4) ???T.
(35a) A character has a deer around to shower with affection. (4) D?T?.