I'm in considerable debt to several earlier answers as otherwise my gaps would be more numerous than they are.
However, some are proving elusive so I would welcome help with the following :
4A - Putting one's drink in old hat is overindulgent (10)
???S?????D
24A - What's set somewhere across the pond? (5)
L?T??
47D - Story-teller had best cope without any tips (5)
?????
&
51A - Ron brained savagely after hospital pass (3, 10)
??N ?E???R?I?O
(Some of these letters may be suspect as I can't find anything relevant to fit.)