Written question asked by Antoinette Sandbach (Conservative) on Tuesday, 4 July 2017, in the House of Commons. It was due for an answer on Thursday, 6 July 2017. It was answered by Paul Maynard (Conservative) on Wednesday, 12 July 2017 on behalf of the Department for Transport.

High Speed 2 Line: Eddisbury

Question: To ask the Secretary of State for Transport, what work (a) has been done and (b) is ongoing, to analyse historical satellite surveys to assess the rate and magnitude of recent ground movements on the proposed route of HS2 Phase 2B in Eddisbury constituency.

Answer: HS2 Ltd has not commissioned or used any satellite data analysis as current evidence does not suggest they are able to detect movements in rural areas with the accuracy required. HS2 Ltd are however investigating other analysis techniques and is reviewing the practicality of installing corner reflectors on the ground, in order to increase the accuracy of satellite data. Combined with other monitoring, this may enable subsequent and more modern satellite survey data to be analysed in sufficient detail.

Secondary information