Is it too late to ask for the ships and aircraft back?
Ships?. The 50 destroyers?. 39 of which were useless and had to be junked. Oh and the UK Cabinet and Royal Navy voted AGAINST accepting the 50 ships, as we didn’t actuallu need them. The Corvette ships from Canada were much more needed and effective.
Aircraft?.
Rather ironic your post, given that in WW1, it was the British who supplied the Americans with their tanks, planes and heavy artillery, as the AEF had none. Feel free to double check.