Had lunch today with a retired electrical engineer who worked on the Bomber bases. He recalled an issue 30 years ago when the closure of Scampton was muted, not the A15 question but the underground pipeline installation.
I know bomber bases had an early hydrant fuel system installed when the airfields were reconstructed in the 50s but these were never, to my knowledge, used. I was told they had gone rusty before being brought in to service.
He thought only 7 bases were so equipped. I know Waddington was and guess the other main bases were too. He thought that the remediation cost had led to its retention then.