Bob Geldof only shuts up in the end because a plane he should be on is imminently taking off for India, and he is still in his local South London pub, refusing to let a heavy cold stop him from talking like others drink - with unquenchable relish. He is in passing promoting his new album, How to Compose Popular Songs That Will Sell, a lesson Geldof could have given with conviction during his old band the Boomtown Rats’ pomp between 1977 and 1980, when their first nine singles hit the Top 20, climaxing with consecutive Number Ones “Rat Trap” and “I Don’t Like Mondays”. The way those achievements have been forever dwarfed by his marshalling of global compassion to save countless Ethiopians with Live Aid is something he can live with.