The Open Guide to London: the free London guide

Streets with fractional numbers:

• Balls Pond Road
• London Wall
• Dowgate Hill, the City
• Barnard Hill, N10
• Southwark St (has 59 1/2, being the Association of London Government)
• Gabriel's Wharf (possibly) - goes 0, 1/3, 1/2, 1, 1 1/2, 2 or something
• Southern Road, N2 (has 1 1/2)
• Devonshire Square (has 2 1/2), EC2M

Having a number 0:

• The Vale, Golders Green

Just weird (out of order):

• Dunford Rd, N7
• Allendale Avenue, N3

Numbered down one side, then continued along the other:

• Fleet Street
• Carnaby Street
• Upper Street, Islington

This was the old way of numbering streets. It's not extensible. I was taught, possibly incorrectly, that this was called 'boustrophodon', like the ancient way of writing text. -- Tom A

The (questionable) spelling 'bustrophedic' is also used. -- Tom A

There are many many streets in central London that are numbered like this. I can say that Great Pulteney Street is because I was there yesterday, and I'm sure that Chancery Lane is. -- [Clive Feather]? The majority of cul-de-sacs built in the 20th and 21st centuries are also bustrophedic -- [John Rowland]?

Triskaidekaphobic streets:

Whitegate Gdns, HA3 (or possibly an adjacent road) [John Rowland]?