M Patrick wrote to uk.transport.london on Wed, 8 Dec 2004:

Thanks. National Rail would only give me that number as well. I'll give it
a go later today.

Sometimes you can go to the station you got off at, and ask, and they
will telephone the station at the end of the line for you, and ask them
to look out for your property. My husband did this a few years ago, and
the station staff at the end of the line held on to his stuff overnight
until he was able to go and fetch it next day.
--
"Mrs Redboots"
http://www.amsmyth.demon.co.uk/
Website updated 28 November 2004