The Confederation of British Industry (CBI) has presented the four candidates for London mayor with its vision for UK business.Candidates including Boris Johnson, Sian Berry, Brian Paddick and current mayor Ken Livingstone were presented with the CBI’s seven-point business manifesto, aimed at helping to maintain the capital’s "competitive edge".Nigel Bourne, director of the CBI’s London region, said: "The CBI manifesto is a direct call to all the candidates to address the priorities of the business community and deliver policies which build on our strong foundations and deliver further prosperity and productivity for the capital."Mr Bourne added that the business community knows what was needed to withstand international competition.The CBI suggested a number of areas to focus on, such as improving the capitals’ transport networks, ensuring the Olympics have a positive effect on the city and working to attract more investment."It is vital that the mayoral candidates listen to and work with employers to ensure that London remains a world-leading place to live, work and do business," Mr Bourne added.The London elections will take place on May 1st.