 During filming at the house being used as Thornley Manor, a member  of the television crew named Colin was pushing some heavy equipment  over some undergrowth and had a narrow escape. The ground collapsed  beneath him, giving way to an old, and previously unknown well. To  this day, the owners of the house refer to it as "Colins well",  although for safety reasons, Central TV (now Carlton) had it  professionally sealed off and covered.