Thank you everyone, I'm getting closer.
My reason for asking is that I amuse myself in old age by writing fictional short stories on aviation subjects. The one I am writing at the moment is about a VC10 flight from London to Bermuda in 1973. Hurricane Alice has passed by but the winds are still very strong from the north. The captain is able to land on RW 30, but could he have opted for RW 01? That is why I want to know how long it was? Also whether it was still in use in the mid-1970s.
Once again, all help will be gratefully received.