Dr Simpson was apparently elated to discover Harrow School had not been chosen.
I understand Winchester, Eton and Cheltenham College for Ladies were also included.
By the end of this period it had become unsuitable for further use, and there is reference to a sum of GBP700 required to address the various repairs needed; the then Headmaster had accepted responsibility for finding this money. In the event the Group did not get final financial approval for its present HQ until 1971 (and even then arsonists tried to burn it down before the building was complete). Well my own (totally serious of course) suggestion is that it was probably used to purchase commercial quantities of Jammie Dodgers and Wagon Wheels for use in the tuck shop at the various Troop camps.
I can confirm that this was an on-going tradition when I joined the Group in 1948.
Girls' schools were selected for obvious reasons so had to be of good breeding stock and preferably scientists.