I found 2 rings on the floor of a train travelling from Cambridge North to kings cross. Not sure where the train had been before hand. Please reply with description/ picture of lost rings and seating position on the train.
(yoyo on 02 Jan 2022)
When: 13 Sept 2022
Where: King’s Cross(51.5347° N, 0.1246° W)
Left velvet H initial card holder with bank cards and ID on Northern Line headed to High Barnet at ~1615 (I got on at London Bridge and off at Kings Cross). Bank cards and ID inside.

Could one of these be yours?