Chugalug2
Did you notice the sign above the door at D&D?
It was a "Double Diamond" sign presume "on loan" from a pub somewhere.
Seem to recall that they cover both 243.0 and 121.5.
Last time I saw their set up they also had the beams come up on some smaller displays zoomed into the beams crossover with a chart underneath in order to locate nearest town/airfield.
Also can say I've used their services, albeit as a practise PAN when I was in a Cessna 150 with a guy from Transamerica ops who later I believe ended up a fleet captain with KLM on B747's. Did an "unsure of location" call with a divert to the nearest airfield which was Lydd and our intended. Evene better was the return. We had arranged with Gatwick for an approach and overshoot if traffic was quite. It was and we got sandwiched in between two Air Europe B737's, although we didn't do the full approach, joined at 2 or 3 miles if I remember correctly. Would loved to have seen the spotters faces as they watched from the roof of the terminal.