The bottom left hand corner has me stumped:
15D Pale ale for one in drink. (9)
W _ I _ E _ A _ _
I think this is probably WHITEBAIT though I can't see how this relates to 'ale'.
21D Old period property. (6)
_ T _ A _ _
Maybe ESTATE, but don't really understand why.
28A Well put together types of food containers. (6)
D _ _ _ _ _ (or D _ T _ E _ if my two above suggestions are correct)
Have no idea at all about this one.
Any suggestions welcome!