In studio the letterheaded paper seen shows the firm's name as Scott-Furlong (all establishing shots of the company's exterior signage upto now have it without the hyphen), with a main works near St. Albans. On location, however, the heading is Scott Furlong Limited, Radley Heath.
The day following the Blackmoor radar equipment accident is Thursday 24th October, yet Wilder's desk calendar stills shows the date as 21 - as it still does on the following Monday morning, by which time it ought to be 4th November..