Yes, I stand corrected, the M.52 not the M.1 Late and postwar co-operation between the US and UK involved much reneging by the US. Nuclear weapons, V2 rocket r

Yes, I stand corrected, the M.52 not the M.1 Late and postwar co-operation between the US and UK involved much reneging by the US. Nuclear weapons, V2 rocket research and afterburning jet engines come to mind. Some US loans to the UK were contingent on them abandoning commercial aviation development post-war. The UK did not do this. However, it is worth bearing in mind that the UK reneged on WW1 loans from the US in 1933.