Two UK nuclear projects suffered a blow as firms planning to buy stakes pulled out. Areva, a French nuclear engineering group, said it would not bid for a stake in Horizon Nuclear Power, an enterprise planning to construct reactors in Wales and Gloucestershire. State-owned Chinese firm Guangdong Nuclear Power Group, will also not bid, after failing to get technological commitments requested of the British government, said an informed source. The news is a setback for the UK government. Areva was at an advanced stage in the regulatory approval process for the design of its reactor, while the Chinese were said to have deep pockets.