This might prove relevant:
"the Bomber Stations concerned was practically complete (these Stations are Wyton Watton, Wattisham, West Rayham)"
http://www.ww2aircraft.net/forum/att...ng-minute-.jpg
Quite clearly only four Bomber/Blenheim bases were 'concerned' with 100 octane fuel. If those four stations held all Blenheim Squadrons, your claim may be true, but somehow I doubt it.
Wyton had two Blenheim Squadrons at the time: Nos. 15 and 40
"In December 1939, both Wyton squadrons were sent to France and Nos. 15 and 40 Squadrons returned from the Continent to Wyton, the first step in converting Battle squadrons to Blenheims. Both squadrons flew their first bombing raids from Wyton on May 10, 1940 against targets in the Low Countries. The Blenheims of No. 57 Squadron were based briefly at Wyton in June before going south, returning for two weeks the following month before flying north only to appear again at Wyton in late October. "
Wattisham had also two, Nos. 107 and 110 Squadrons
http://www.raf.mod.uk/bombercommand/s30.html
http://www.raf.mod.uk/bombercommand/s106.html
Watton also had two Blenheim Squadrons: Nos.21 and 82 Squadrons
http://www.raf.mod.uk/bombercommand/s31.html
West Rayham had only one Blenheim Squadron, No. 139, and possibly from June 1940 also no. 18 also operating.
That's 7 or more like 8 Blenheim Squadrons on 100 octane. At that time there were 15 Bomber Command Sqns. operating Blenheim IVs. But this pretty much explains where 100 octane fuel went in such quantities - even those 8 Blenheim Squadrons were consuming a lot. Total tankage was 468 imp. gallons compared to 85 gallons on the Spit - a worth of about 45 Fighter Squadrons..
