Really struggling today, must be brain addled with Eurovision!
1d Skilful swimmer's weight - with special effort - reduced (7) G?A?P?S
5a At first boat has inexperienced sailor after source of oil (7) B?U????
10a Powerful financier tipsy behind boozer (5)
B????
12a Private place for a film (2,6) ?N ?A????
7d Fan alone after grumble about City (9)
8d Harry was in charge of axe (7)
16a Scoff cod (4)
19a Pay for a vicar (6,4) ?I?I?G ?A??
Thanks in advance
Lilacwine