The CoalHouse Fort site is an English Heritage site situated in East Tilbury, Essex. It was originally built during the reign of Elizebeth 1st to protect London from any French invasion. The special event call was first activated in May 2006 following several visits by members of the club. The location is quite remote on the side of the Thames, and is very open.

It has proven very good for DX contacts, as can be seen from the whiteboard image below: