James,
I have a copy of Flying Standing Orders for RAF Stations Holme and Breighton. However, those 2 names are crossed out and Ludford Magna inserted by hand. The Orders may well be generic!
The document is dated Sept 1st 1942.
It covers Diversions, Aerodrome Control, Signals and layout, Signals procedure, Local R/T and Darky Procedure. The 'Chance light' you spoke of in your OP has been crossed out and replaced with 'flood light'. Aerodrome has been manually replaced with Airfield.
It also covers recovery actions by the pilot, Duty Control officer and Airfield Controller when enemy aircraft are in the vicinity with regard to lighting, etc; also covers voice procedures.
Might be of interest!
PS
The Chance light would have come on at some point – but when?
Quote "In the event of an aircraft requiring the Chance Light for landing purposes, the captain will flash the letter "F" after being given permission to land and whilst making his approach" Unquote.
I'm off for some lunch now