A long-awaited west London cycle superhighway must run all the way from Hounslow to Hyde Park, as was originally promised, campaigners have demanded.

Hounslow Cycling said more than 220 people had penned postcards to London mayor Sadiq Khan urging him to ensure Cycle Superhighway 9 (CS9), which was originally scheduled to open in 2014, is created as soon as possible.

The action group also said it wanted Transport for London (TfL) to work closely with Kensington & Chelsea Council to ensure the route runs all the way to Hyde Park rather than ending at the Hammersmith & Fulham borough boundary as it is feared may happen.

Hounslow Cycling, which is the local branch of London Cycling Campaign, said the number of postcards sent illustrated the level of support for the long-overdue cycle route along the A315.

'Cycle superhighway essential to keep borough moving'

Tim Harris, a volunteer for Hounslow Cycling, said: " Hounslow Council is planning to build over 12,000 new homes in the borough by 2030.

"The joy of protected cycle lanes is that they can cope with these sorts of increases in people travelling in a way that vehicle transport and public transport no longer can.

"Our message to the mayor of London is that the promised CS9, unobstructed between Hounslow and Hyde Park, is essential to keep our borough moving."

Cycle Superhighway 9 has been on the table since 2008

Mr Harrison added that the cycle route would help reduce air pollution, connect local shopping centres and make it easier for children to cycle to school, among other benefits.

He said Ruth Cadbury , MP for Brentford & Isleworth, was among those to have sent postcards supporting the cycle path.

London mayor responds to postcards

Hounslow Cycling said Mr Khan had replied to say TfL was working with Hammersmith & Fulham Council to provide a segregated cycle route across the Hammersmith gyratory, as part of a major redesign of the junction previously reported on by getwestlondon.

However, his response failed to mention the rest of the proposed CS9 route.

CS9 was one of 12 new cycle paths first proposed in February 2008.

Detailed designs were unveiled in 2013 but Kensington & Chelsea Council objected to the plans for its section of the route.

It raised safety concerns about pedestrians having to cross fast-moving traffic on the new cycle lane.

'Safety improvements needed at Kew Bridge junction'

getwestlondon reported in June this year how Mr Khan had said TfL was working with Hounslow and Hammersmith & Fulham councils, but failed to mention Kensington & Chelsea.

It is understood detailed designs for the cycle superhighway are still some way off being produced. It is not known what progress, if any, there has been.

Hounslow Cycling says the junction at Kew Bridge remains, like Hammersmith gyratory, a "hostile, dangerous and intimidating barrier to people on bikes".

It has called for "meaningful design changes" at both spots to ensure the new cycle superhighway is a success should it open.

getwestlondon has approached TfL for a comment.