The RPS has embarked on a mission to collect at least one photo from every London street over the next six months.
The Society says it was inspired by a character in a book called Bleeding London, who embarks on a mission to walk every street in the capital – armed with a London A-Z.
The RPS plans to showcase the resulting images in an exhibition and book next year.
Anyone can take part and the photos can be captured on any type of device.
To sign up, visit www.bleedinglondon.co.uk