I don't think the debt referred to above was lend lease, IIRC it was to shore up sterling after the war, which was about to go tits up because we had spent all our money on tanks.

So the British paid some 800 million pounds while the Germans received money from the Marshall Plan?
So lucky we did not win the war!
It has been remarked on....

And of course when your factories were rebuilt they were state of the art 1950s ones rather than knackered 1920's ones. Not that I am seriously suggesting anyone ought to let either the Luftwaffe or the RAF do their town planning for them...