European Commission investigates Hinkley nuclear deal
3 December 2013 Last updated at 08:54 GMT
The European Commission has launched a detailed investigation into the deal to build a new nuclear power station at Hinkley Point in Somerset, the BBC understands.
The commissioners want to know if it breaches EU competition laws, and a decision could be months away.
EDF - the company behind Hinkley C - told the BBC this was always to be expected and it does not see it as a major setback.
But, a local MP has criticised the EU and said it was "typical of their attitude towards Britain".
BBC Points West's Clinton Rogers reports.