I have now received the £5.60 payment from Virgin Trains. I thought I might not receive this due to the time that it had been outstanding.
Interestingly, the cheque was dated 1 October 2019, the letter was dated 12 November 2019 and the postmark on the envelope was 13 January 2020!
Perhaps it’s time for Delay Repay payments on Delay Repay payments …