A few more thoughts for you.
Probably called West Kirby, rather than one of the nearer but smaller settlements, as that was the postal sorting office which served it.
Another major house builder locally were Farrals.
Belsen by Sea, this was the epithet used by a former colleague of mine who had, somewhat unwillingly, done his square bashing there on national service. I suspect there were many young men who felt the same even if they subsequently enjoyed their days in the "Mob."