As ever Stuart, great photos and short film - thank you very much.
I forgot to add the the chap who had waved us off was a former Plant employee, having worked at Cowley for 39 years. He very kindly brought me some memorabilia from a Cowley family day back in 1973. He wasn't on the convoy, he just wanted to come up and see the cars, and he seemed like an ideal person to wave us off to Gaydon.