Stephen Mosley was the Conservative Party member of Parliament (MP) for the City of Chester from May 2010 to May 2015. He lost his seat in May 2015 to the Labour Party's Chris Matheson by 93 votes.
Like two other new Conservative MPs, Damian Collins and Thérèse Coffey, Chester used his maiden speech in the House of Commons in 2010 to express his strong pro-nuclear power views, highlighting that Urenco’s uranium enrichment plant is based at Capenhurst in his constituency:
- Nuclear power is clean. It is a low-carbon source of electricity generation. We have secure long-term supplies of fuel. Modern reactors are incredibly safe, and it is a future technology in which Britain can still lead the world. Operators and owners of nuclear power stations have been jumping at the opportunities offered by the previous Government’s draft nuclear policy statement, and there are now 10 sites judged as potentially suitable on, or near to, existing stations. Those sites obviously have to be subject to the normal planning process for major projects, but the Government need to bring forward a national planning statement for ratification by Parliament as soon as possible. 
In September 2009 Moseley listed the following entry in the MP's Register of Financial Interests
- I and my caseworker were both given pen sets by Urenco, Capenhurst, Chester, on the occasion of a visit to the company (value £20 approx). Hours : I hour (Registered 3 September 2009) 
- All-Party Parliamentary Group on Nuclear Energy
- Former member of the Smart Cities All-Party Parliamentary Group
- BBC News Chester, City of, accessed 15 May 2015.
- New Conservative MPs make pro-nuclear maiden speeches, Chris Whiteside's Blog, accessed 16 June 2012
- REGISTER OF MEMBERS’ FINANCIAL INTERESTS as at 6 September 2010