Whilst researching cable landfalls at Broadstairs, I came across a forum comment about a cable landing station near the beach at a place called Dumpton Gap which has existed since the 1920s’. I am informed this was for the Canterbury – La Panne cable system (see comments below).
This beach is the landfall for the two modern submarine cables Pan European Crossing and Tangerine. It is not known if they are associated in any way with the building below, which still appears to be in use.
The picture above shows a cable being pulled in in September 1927.
References found in the BT archive:here.