N-Dubz star Dappy has revealed he is working with Queen's Brian May on his new single. The British rapper said he's heading to the US to finish the video for their new track. May, 64, recently revealed he thought Dappy should be given an award for his songwriting skills after hearing his number one track No Regrets. According to UK newspaper Daily Mirror, he said: "He said I deserve an award – I couldn't believe it! "So I had to hit him up to work with me. I'm flying to LA in the morning to work…