I like the idea of Jen and Debbie on the same train into London Paddington. Looking at the timetables from back then (you may guess I'm a bit of train enthusiast), your best bet is probably the 0840, arriving at 1015. Unfortunately, I can't offer you anything more glamorous than a three-carriage diesel multiple unit:
https://www.railcar.co.uk/type/class-117/summary
This will be a train that Jen will have seen operating on a daily basis in Oxford, nothing hugely glamourous.
At least Anais will get something a bit posher!
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I will be adding a link to some relevant timetables which will contain passport regulations. The biggest potential hiccup this side of the Bosporus is likely to be Yugoslavia.
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Anyway, I see that we have four women and one male driver. Desmond will be the perfect gentleman. His wife is waiting for him in Calais for one thing!
This message was last edited by the GM at 22:22, Sat 05 June 2021.