['LIVEWIRE?']

I'm sure it was Radio Caroline which was 'your all day music station' and, in the early days they closed down at 6PM each evening. Radio 390 , which always put a good strong signal into North Oxfordshire, no doubt because of it's relatively low frequency and (relatively again) high powered transmitter c/w a more efficient aerial than on the ship-based stations. As an aside, how many frequencies used by the pirates were later adopted by the I.B.A. and it's successors for local radio - 773kHz, later 774kHz (388M) R. 390's actual frequency, certainly was. Severn Sound in Gloucester were allocated that channel, which is still used today by, I think, Smooth Radio in the same area.