The event at the Queen Elizabeth II Conference Centre in Westminster follows a series of local supplier days in Somerset for firms hoping to win work on the £500m Hinkley Point plant.

The QEII meeting will outline opportunities nationwide on EDF’s plans to build a new generation of nuclear plants including two new reactors at Sizewell in Suffolk.

More than 40 contracts worth tens of millions of pounds have already been placed for work at Hinkley Point and Sizewell.

The sites are the start of a major construction programme which will lead to the tendering of 150 major contracts worth billions of pounds.

About 650 firms have been invited to the QEII centre on September 13 to hear how they can take part in Britain’s largest construction project for decades.

An EDF spokesman said: “Key speakers will provide an update of the current position for Hinkley Point and Sizewell C, and ensure that UK companies are aware of the opportunities that those investment plans will create.

“Presentations in the afternoon will be led by key EDF Energy staff from engineering and will focus on the codes and standards to be used to help companies understand the requirements for working on the project.”

Companies interested in attending the event should register their interest by 3 September at www.edfenergy.com/newnuclearopportunities