On 29 November 1982, the Secretary of State for Energy, Nigel Lawson, told the House of Commons that

The Government has now completed its review of the Fast Reactor (initial capitals in the original). The Fast Reactor is of major strategic significance for the U. K.’s and the world’s future energy supplies. It… can create out of the spent fuel and depleted uranium which has so far arisen from our thermal programme fuel equivalent to our economically recoverable coal reserves.

The UK is among the world’s leaders in the development of this technology. Through the successful programme of research and development undertaken by the Atomic Energy Authority, which centers on the operation of the Prototype Fast Reactor and associated fuel cycle at Dounreay, we have demonstrated the feasibility and potential of this technology … The Government has therefore decided to continue with a substantial development programme for the fast reactor based on Dounreay…