Sowerbutt's London

Brendan Bracken paused: “The bombing goes on night after night, Sorbay. It is relentless. Our information is that more Jerry bomber squadrons are waiting in the wings. How long can London take it?"
https://www.amazon.com/Colour-Red-Deal-Sowerbutt-Novels-ebook/dp/B00RL9FGKM?