LONDON, June 23 (Reuters) - France's EDF called on the British government to deliver the legislation that would underpin the financing of a new nuclear plant, Sizewell C, saying it was now essential.

Simone Rossi, the UK head of EDF, said in an interview at the Reuters Events: Global Energy Transition conference, that lots of progress had been made on multiple fronts but the legislation underpinning the new financing scheme was now needed.

"I am led to believe it is quite possible to have this legislation included in the second session of parliament this coming autumn," he said.

"I would say this is an essential prerequisite for the project to be enabled because the project needs to be timely delivered and this legislation is now really, really essential."

Asked if his company had a Plan B in the event the government did not advance with the legislation, he said: "We do not really. I have to say that would be for the UK government to consider."

"The main avenue has been drawn in terms of funding mechanism for this project, I think it's a very solid one, a very robust one.

"It just requires enabling legislation. There is every reason to believe that this legislation will be making progress as planned."

China General Nuclear Power Corporation (CGN) which holds a 20% share in the pre-construction phase of the Sizewell C project, is on a U.S. government list of companies Washington deems are acting contrary to U.S. interests.

Asked if that designation could hamper the project, Rossi said it will be up to the British government to decide on the best approach when the time comes to make an investment decision. For moreon the ReutersEvents: Global Energy Transitionconference please click here https://reutersevents.com/events/energy-transition-global/ (Reporting by Christian Lowe; writing by Kate Holton and Christian Lowe Editing by Marguerita Choy)