Fracking firm boss says it didn't expect to cause such serious quakes

Drilling at Preston New Road site in Lancashire has triggered 37 minor quakes in three weeks

A senior executive at the fracking company Cuadrilla privately said this summer it did not expect to cause earthquakes that would be serious enough to force it to halt operations.

But despite that confidence, the company has triggered 37 minor quakessince it started fracking for gas at its Preston New Road site in Lancashire three weeks ago.