In message , Dave Arquati
writes
Shocking.
My reply to them, as it happens! ;-)

I could understand if a half-hourly service was widespread across the
network, but a quick look at the Overground Network map shows about 50
stations with 6tph or more. Perhaps you should carry around a copy to
give to these people :-)
They publish **timetables**?!
--
Ian Jelf, MITG
Birmingham, UK

Registered Blue Badge Tourist Guide for London and the Heart of England
http://www.bluebadge.demon.co.uk