Huge wrote to uk.transport.london on Thu, 13 Jan 2005:

A space which, in the case of Thameslink, is that normally
occupied by not two but *three* fare-paying passengers.

So? If Thameslink object to that, they can always withdraw the
facility. They don't, so evidently they think the goodwill it generates
worth the loss of revenue.
--
"Mrs Redboots"
http://www.amsmyth.demon.co.uk/
Website updated 2 January 2005