Except that a lot of this can be mitigated by proper regulation (which the UK generally has).
Lots of activities that go on in the UK are dangerous/have the potential to cause environmental impacts but regulation is in place to mitigate the risks.
Fracking is exactly the same, there's nothing super duper risking or dangerous about it - with appropriate regulation there's no real reason to fear it.
http://www.telegraph.co.uk/finance/...ts-drilling-caused-Blackpool-earthquakes.html
Private company Cuadrilla Resources has admitted that its activities probably caused two “seismic events” that occured in Blackpool earlier this year.