As every municipality, province/state, and country should do, the UK has reassessed it's HIRA (hazard identification and risk analysis), adding solar storms and volcanos to their list of risks.
While solar storms do not pose a direct risk to people, it can disrupt power grids, satelites, radio transmission etc.
http://www.ctv.ca/CTVNews/TopStories/20120318/britain-volcanoes-solar-storms-20120318/