In article , Dave Newt
writes
Helen Deborah Vecht wrote:

(Huge)typed

AFAIK, bicycles are not allowed on the Circle Line.

Oh yes they are! Bicycles are not allowed on the _underground_ sections
of 'deep tube' lines (Northern, Central, Piccadilly, Victoria, Jubilee &
Bakerloo) at any time but are allowed off-peak on the Metropolitan,
Hammersmith & City, District and the Circle line. They are allowed on
the overground sections of tube lines off-peak.

Detailed list he

http://tube.tfl.gov.uk/content/faq/bicycle.asp

I've never understood the specific ban on bicycles on the Northern Line
between Colindale and Hendon Central, (obliquely) referred to on the
above site.

Anyone know the reason?
--
Ian Jelf, MITG, Birmingham, UK
Registered "Blue Badge" Tourist Guide for
London & the Heart of England
http://www.bluebadge.demon.co.uk