The BBC reports on Transport for London's figures showing that by September 2019, the cash pile of unclaimed balances and deposits on dormant Oyster cards had reached £399m.
Caroline told the BBC:
"TfL never stops bombarding us with advertisements and information campaigns, but highlighting this cash mountain is one issue that they remain very quiet about.
"I accept that some people living in London might want to keep hold of unused Oyster cards for long periods of time in case they have friends or family staying with them, but this does not fully explain why [the total] keeps on growing.
TfL should do more to make refunds easier."