It woke me up.

The end of the bed nearest the outside wall was shaking and the TV was rattling on it's brackets which are (still, I'm glad to say) attached to said outside wall.

Thought at first it was an HGV illegally rumbling along our residential road, but heard no vehicle engine noise so I realised it must be an earthquake.

I'm living less than 15 miles North of central London (2 hours drive from Gainsborough) so if it was powerful enough to wake me I'm not surprised people in Kent also felt the tremor.