Had video recorders made it on to the market by then? An expensive way at the time to offer more choice, and I guess no way to advertise them to TV viewers, but if they were out you'd imagine they'd have benefitted. Suspect radio and the cinema did as well.
VCRs were around, but as said expensive, if you did have one, all that would have been possible would have been to time shift BBC 1 and 2, there were very few prerecorded tapes available
I don't recall ITV's absence being particularly inconvenient, and I don't recall any uproar about the BBC having no daytime programming, radio ruled daytime back then