I'll have to give it to you Ned, but it actually wasn't built as a coast watch tower.
when the original Coast Guard tower was deemed unfit and unsafe, the CGA decided not to replace it with a new one, as they have the large one near to where I live in Knot End, which covers almost as much of the coast westwards as the old one did and more to the east as well. Mind you it had not been used by the CGA for a time and was being used by the RSPB for watching migratory birds.
So the RSPB granted money to the local council to build a new tower for their purposes, and was initially to be only for their use.
However National Coast Watch, at the time a fledgling organisation in the north west approached the RSPB and asked if they could occupy one of the levels for their charitable organisation and so it is now known as "the new coastguard " station it was in fact designed at the instigation of the RSPB.
Over to you, Ned.
Jim.