Westminster City Council is going to the High Court to try and stop work starting on CS11, as Transport for London said it will start the Swiss Cottage Gyratory on July 30.

An injunction, put forward by the council and supported by campaigner Jessica Learmond-Criqui, is looking to delay the work getting underway.

The case will be heard at the High Court on Thursday.

In June, Westminster City Council announced it was launching a judicial review against the cycle superhighway as a whole.

When completed, the route will run from the Finchley Road into the West End.

According to the legal application, it says: “the implementation of the works at Swiss Cottage would result in significant harm to local residents in the London Borough of Camden and Westminster City Council.

“This harm could not be compensated for in damages. This points strongly in favour of interim relief.”

The start date for the project has been shrouded in secrecy for weeks.

Residents near the scheme in Swiss Cottage got a letter yesterday confirming work will start on July 30.

The lawyer working on the case is Cllr Andrew Parkinson, a councillor for Frognal and Fitzjohns ward, and barrister for Landmark Chambers.

Westminster City Council and TfL have been contacted for comment.