The single also featured stars from sport and comedy including Kenny Dalglish, Peter Reid and John Bishop.

BBC: Sir Paul McCartney

Peter Robinson and Martin McGuinness had said they were meeting the taoiseach Enda Kenny "to achieve maximum clarity on this issue".

BBC: A5 road sign

First Minister Peter Robinson and Deputy First Minister Martin McGuinness had raised the possibility of a visit to Northern Ireland with Mr Kenny.

BBC: Protocol rules out US President Obama's NI visit