Robertson & Wallwork in 'tense' rivalry with Adcock & Bankier

Britain's Nathan Robertson and Jenny Wallwork and fellow Olympic mixed doubles hopes Chris Adcock and Imogen Bankier discuss their rivalry ahead of the All England Badminton Championships.

Only one pair is likely to make it to London 2012 so the couples are in direct competition at the world-class event in Birmingham, which begins on Tuesday.

British Badminton is expected to make their selection based on who is higher in the world rankings at the close of the qualification period at the end of April.