On 12 Nov 2003 23:29:09 +0000, jasonr (Jason Rumney) @ f2s.com wrote:

Paul Corfield writes:

Hounslow got H20 up to H37 plus oddities like the H98.

The H91 follows the 391 route most of the way between Hammersmith and
the Chiswick Roundabout, which has always seemed to me to be more than
just coincidence. The other oddities may have similar similarities,
or maybe Hounslow just ran out of numbers and took 90-99 as well.

Similarly I think the H37 used to be part of the 37, along with the
337 and what is still called the 37

Martin