The concept of 13 as an unlucky number is said to have developed from the number of those present at the Last Supper… thirteen including Judas Iscariot.
With 13 days to go until Halloween, here's our list of 10 London 13's
1. The Number 13 bus runs from Aldwych to Golders Green Bus station – alight at Golders Green to visit Bram Stoker's ashes at Golders Green crematorium.
2. At the Savoy Grill, no table is ever set for 13 diners. Parties of 13 are treated to the company of Kaspar, the Savoy’s three-foot high alabaster cat – he is given a full place setting to stave off bad luck.
3. The London Eye has 32 pods, numbered from 1 to 33… with no number 13.
4. Of the 27 stations on the Jubilee Line, 13 are below ground.
5. Mary Kelly, fifth victim of Jack the Ripper, took a room at Miller’s Court, Spitalfields. Room number 13, of course.
6. One Canada Square at Canary Wharf has no 13th floor.
7. Football: Chelsea's Michael Ballack, Fulham's Danny Murphy, West ham's Luis Boa Morte all wore the number 13 shirt.
8. Fleet Street, Oxford Street, Park Lane and Haymarket each have no number 13.
9. Tennis. In 2009 the new No.2 Court at Wimbledon was built on the site of the old No.13 Court. The old No.2 Court was often host to famous defeats of reigning title holders – McEnroe, Sampras and both Williams sisters among them. Its nickname? The Graveyard of Champions.
10. 13 London Walks guides will be at large on Halloween leading four different ghost walks.
A London Walk costs £10 – £8 concession. To join a London Walk, simply meet your guide at the designated tube station at the appointed time. Details of all London Walks can be found at www.walks.com.