News of a 3.3-magnitude earthquake in the north-west of England overnight may have left you wondering how common seismic events are in the UK. The tremor struck shortly after 11.23pm and was felt across Lancashire and the southern Lake District, including the towns of Kendal and Ulverston, within 12 miles of the epicentre. Data suggests the quake occurred just off the coast of Silverdale, Lancashire, at a depth of 1.86 miles.