"MIG" wrote in message

On 28 May, 11:15, Mizter T wrote:
http://news.bbc.co.uk/1/hi/business/10162991.stm

Average of £1.80 sits on each idle card.

That's the whole point, isn't it?

But the figure for the nominal value of remaining periods on seasons
would no doubt be a lot more.

But these are cards that haven't been used for at least a year.
Presumably they are mostly tourists or Londoners who have mislaid
unregistered cards.