EDF and AREVA have applied for generic design acceptance for the EPR from the UK regulatory authorities.
The UK EPR design is based on the Flamanville EPR (FA3) plant being built in France.  The UK Health and Safety Executive has issued guidance defining the process by which they will confirm their acceptance of new designs of nuclear power stations for construction in the UK.  Similarly the UK Environment Agency has proposed a process by which they will assess generic design issues associated with discharges and wastes produced by new nuclear power stations.

The reactor containment building has two walls: an inner prestressed  concrete housing (5) internally covered with a metallic liner and an outer reinforced concrete shell (6). This building houses the reactor coolant system, whose main components are the reactor vessel (1), the steam generators (2), the pressuriser (3) and the reactor coolant pumps (4).
Inside the containment there is a special area (7) where in the extremely  unlikely event of core meltdown, any of the molten core escaping from the reactor vessel would be collected, retained and cooled.
 The turbine building (10)  houses the equipment that transforms the steam produced into electricity: the turbine, the alternator and the transformer, which is connected to the grid.
  In the event of a power blackout, diesel generators, housed in two separate buildings (9), supply electricity to the safety functions.

Further details can be found on the Generic Design Asessment here.