Hello Reasson,
I am a bit of a Johnny come lately to this thread, but came across it when searching for posts concerning the Canberra prototype, VN799. I have been researching the life and ultimate fate of this machine, and compiling it all in a short web site:
Remembering VN799: A Tribute to the English Electric Canberra Prototype A.1
As you will see, I gathered the accident report from the crash which indeed confirms the fuel leak being the (initial) cause of the accident. However, the final conclusion was pilot error, in that it was felt the pilot should have noticed the leak in the No.2 tank earlier, the gauge not being found faulty, and switched to the No.3 tank instead after exhausting No.1. He did indeed switch to No.3 after the flame out, but then, altitude was too low to successfully relight the engines, leading to the crash.
What I am curious about is the state of their injuries. You wrote that the crew were not seriously hurt, but I would like to confirm the source of this. The 'CAS' column of the card shows 'I(s)' to which I am hoping PPRuners can clarify what this means. 'Injuries slight' or 'severe'? Depending on where you read about the crash, you will hear they died, or were just injured. Despite further digging I have not turned up anything more concrete.
Good thread on BLEU though, very interesting indeed.
ATB,
Steve