I wonder if the Right Honourable member for Mid Sussex and his Prime Minister have considered that the low Richter scale seismic tremors reported in the UK, consequent upon hydraulic fracturing of shale, were not taken into account by engineer John Urpeth Rastrick and architect David Mocatta when they built the 100ft-high Ouse Valley Viaduct, which conducts the Brighton to London railway line?

It is a 37-arched structure comprising 11,000,000 bricks made in Belgium and barged up the then-navigable River Ouse via Newhaven and Lewes to Balcombe. There is a wharf cottage adjacent to the viaduct.

Paul Graham Wayne, Stammers Hill, Fulking