We are undertaking pre-installation works including the installation of a temporary bridge over the River Bourne. This will involve vegetation removal in our working areas, installation of temporary foundations and construction equipment and materials being brought onto Chertsey Meads.

Open cut works are due to start in June 2022.

Reinstatement will take place directly after the main installation works in September 2022.

The map above provides information on installation within the SANG. Further information on our construction plans can be found below.

About installation

Before installation starts, the first thing you will see is signs notifying SANG users that works will be taking place.

When installation starts, Heras-type fencing bolted together, or strong-wall fencing, will be used to secure the working area.

You may also see mobile welfare units, equipment, materials and vehicles within the working area.

During the open cut installation process, you may see deliveries of the steel pipes. These will be brought to site in a ‘just-in-time’ delivery sequencing – this is because we want to reduce the space needed for the compound within the SANG. We will also have 24-hour security of the working areas within the SANG.

Access to Chertsey Meads will be available throughout installation. If there are any areas of closure, including footpath diversions, we will notify the community in advance.

The car parks serving Chertsey Meads will remain open throughout installation.

We will be using an open cut technique to install through the SANG. This work will likely take place in June and July 2022.

Fencing material will be selected to reduce the visual impact on the SANG, maintaining low visibility of the working area.

We will be using a Horizontal Directional Drill (HDD) trenchless technique to install under the River Thames. This work will likely take place from June to August 2022. We anticipate we will need up to nine days of continuous working.

Before we start installation, pre-construction activities will take place including installation of a new temporary bridge over the River Bourne.

Prior to installation, we will work with the Chertsey Agricultural Show to limit impacts to the Show and along Mead Lane.

The work areas will be fully secure with locked gates and 24-hour security.


Where the topsoil has been stripped and stored, this will then be replaced after the works have been completed and either reseeded or left to naturally regenerate, following discussion with Runnymede Borough Council.

The vegetation reinstatement will be subject to a five-year aftercare.