Inaccurate performance data for BOB fighters in COD comparing to RL data

[41Sqn_Banks]

100 Octane Fuel. Completion of the Thornton Plant. Memorandum by Minister of Aircraft Production.

1940 Oct 30

AVIATION fuel of 100 octane content is now a necessity for operational
aircraft.
...
4. Our requirements of this fuel for 1941 are covered. But in 1942, after
allowing for purchases already made and the estimated output from Heysham
and Trinidad, we shall have to find 600,000 tons from other sources to meet our
needs. These will increase in 1943.
...
7. A decision is now necessary on whether we are to continue with the
erection of the Thornton plant.

http://www.nationalarchives.gov.uk/c...AB+67%2F8%2F81

They even thought about cancelling the construction of a new plant in October 1940. Looks like there was plenty of 100 octane fuel available.