On 18 June, 15:57, Rob wrote:
Anyone know what the tall green pole in this photo is? On corner of
Elmfield Rd and Cheriton Sq Balham

http://maps.google.co.uk/maps?ie=UTF...e=FaHqEAMdrK39...

Possibly a disusued sewer vent. These were installed in various places
to allow excess gas to escape from sewers and tended to be tall so the
gas would disperse without creating a stink or a fire risk.