"The record for visiting all 275 London Underground stations has been
broken by 43 minutes.
Geoff Marshall, 32, from Epsom, Surrey, and Neil Blake, 31, from
Deptford, south-east London, recorded a time of 18 hours, 35 minutes
and 43 seconds."
http://news.bbc.co.uk/1/hi/england/london/3700658.stm
--
Tony Bryer