That is stunningly bad luck! So far I have managed to avoid it (as far as I know). No idea how.
West Coast Railways are running a diesel charter from London Paddington to Cardiff.
GWR▸ look to be running some eight coach shuttles between Cardiff and Newport.
Had it for the first time in 2020 (I was an early adopter!) which cost me a ticket for England v Wales.........tested positive on Tuesday, and again yesterday - not feeling too bad really, but that may change depending on this afternoon's result from Cardiff!
(I do have a ticket for England v France next month, hopefully all clear by then!)