In this episode, we get to see the exterior of Lord Brett Sinclair's (Roger Moore's character) London apartment for the first time. The location is Queen Anne's Gate, postcode SW1. For the series number 53 was placed above the door, but the actual exterior used was that of number 15 and was usually shot with Lord Sinclair's Bahama yellow Aston Martin DBS 6 parked outside.
The village pond shown towards the end is the same one used in Murdersville, where Emma Peel gets a ducking. If you freeze frame and look at the very left of the pond you can see the stocks.