Please note: Descriptions below are relevant only to the previous consultation held in autumn 2018, and do not form part of the current design refinements consultation material. It is included here for reference.


Section F ran through both rural and urban areas, including one area of land owned by the Ministry of Defence (MoD) and also a number of Sites of Special Scientific Interest (SSSI) such as Colony Bog. It spanned Surrey Heath Borough Council and Runnymede Borough Council.

Preferred route description

Section F was approximately 16km long and started immediately after the B3015, where it entered MoD land associated with the Bisley and Pirbright Ranges, Colony Bog and Bagshot Heath SSSI. It continued north running adjacent to Deepcut Bridge Road (B3015) before turning east to follow Red Road (B311), where there were three options leading to Guildford Road.

The northern option crossed Red Road at the junction with Lightwater Road, and followed an existing track to Guildford Road. The second option followed Red Road and re-joined the existing pipeline route and followed it to Guildford Road. The third option followed the existing MoD track to re-join the existing pipeline route and followed it to Guildford Road.

The section then crossed Guildford Road, using trenchless techniques under the A322, continuing through Windlemere Golf Course. It then continued generally north east and included two sub-options due to the Chobham Common SSSI between Windlesham Road and the B386.

The section then crossed the B386 before ending just north of Chertsey Hospital, Holloway Hill and the approach to the A320/M25.

Sub-options selection

We have selected the following sub-options to progress from Section F:

Sub-options Sub-option selected Reasoning
F1a, F1b and F1c: Red Road F1a and F1b combined

Following further technical work, we have merged the first section of F1b along Red Road with F1a, which follows an existing track to Guildford Road. This is because consultation feedback we received made us aware of the impacts of a loss of trees along a very narrow footpath at the start of F1a. There is also a new small section of route to join these two sub-options together.

This would enable us to reduce the time we are installing along Red Road relative to F1b, a key concern expressed within the consultation responses, and reduce the potential impact on environmental features along F1b and F1c. The remaining route proposed within F1b was deselected due to a number of environmental and habitat concerns for protected birds and reptiles in the area, identified through further survey work. F1c was also deselected due to environmental and engineering constraints.

F2a and F2b: Chobham Common F2a

We have selected F2a, which travels across Chobham Common. This option would reduce any potential impacts on residential areas to the south of the common, and most closely follows the existing pipeline alignment. Feedback from the consultation strongly favoured this sub-option. F2b, on the other hand, was not favoured in consultation feedback due to the need for street works and potential traffic disruption. We have conducted further technical work to understand how we can reduce the environmental impacts on Chobham Common and the final route will include areas for tree planting and other environmental mitigation activities that will be set out in the Environmental Statement.

F3a and F3b: Silverlands F3a

We have selected F3a to progress, as this was favoured within consultation responses and from site visits with local landowners.

We would use a trenchless crossing in this area to reduce the need for tree removal. F3b was deselected because of the potentially significant impacts it could have on a local business.

F4a and F4b: Guildford Road (A320) and M25 F4b – with further refinements

We have progressed F4b, although further refinements will be made to this section of the route.

Sub-option F4a was deselected due to the engineering constraints of crossing the M25, identified from further technical work.