Boris Johnson, Member of Parliament for Uxbridge and South Ruislip responds to discovery of ‘Ruislip Bed’ after engineers working on HS2 discovered an ancient, sub-tropical coastline dating back 56 million years.
The discovery was made at a site in Ruislip, when HS2 Ltd’s ground investigation team found a previously unknown material, located up to 33 metres below the surface. The layer of black clay, which HS2 Ltd has named the ‘Ruislip Bed,’ is thought to have been formed from densely wooded marshes on the edge of a sub-tropical sea.
Following the announcement on Friday, Boris was contacted by a number of residents worried about what this new material meant for the construction work in Ruislip. Boris immediately raised residents’ concerns with HS2 Ltd who have provided the following statement: “The discovery of the Ruislip bed has shed light on the sub-tropical environment that existed over 50m years ago. This exciting new strata discovered as part of the Ground Investigations is a black clay like material up to one metre thick, representative of an old wooded shoreline. The HS2 tunnel at West Ruislip is predicted to encounter it during excavation in the lower part of the tunnel. It fits within the predicted geological variation expected during the tunnelling and has been allowed for in design. As such it will not cause any unexpected effects, including settlement, greater than those already indicated in published HS2 reports.”
Boris said: “Whilst this new clay is an exciting archaeological discovery, I appreciate this has left some residents seeking further guarantees. HS2 have assured me these findings won’t affect the tunnel or settlement. Anyone with concerns about their specific circumstances or property, please get in contact.”