A joint venture between Cavendish Nuclear, a wholly-owned subsidiary of Babcock International Group, and Fluor, the Cavendish Fluor Partnership will now start a five-month contract transition phase following a ten-day standstill period.

The companies will become the new Parent Body Organization and take ownership of Magnox and RSRL following completion of transition period.

NDA chief executive John Clarke said the selection of Cavendish Fluor Partnership as the preferred bidder is a significant step in the organization’s drive to attract world-class management and innovation to its sites.

"The Cavendish Fluor Partnership brings a successful track record and extensive nuclear experience that will bring enormous benefits to the decommissioning and clean-up program," Clarke added.

Cavendish Nuclear managing director Roger Hardy said, "The Cavendish Fluor Partnership brings together outstanding international decommissioning, operational and site management expertise and we look forward to working with the Magnox and RSRL teams to deliver the sites’ program safely and cost effectively."

The contract is expected to provide savings in excess of $1.6bn in the decommissioning program for the 12 nuclear sites.

Magnox is responsible for decommissioning of ten reactor sites, located in England, Scotland and Wales, while RSRL is responsible for decommissioning two pioneering nuclear research centers at Harwell and Winfrith.