You know it’s all gone horribly wrong when your own media adviser has to interrupt a live broadcast to halt your interview. UKIP leader Nigel Farrage suffered the ignominy this morning when he went head-to-head with LBC’s James O’Brien. But it was too late. O’Brien had done his homework and Farrage, who usually resorts to bluster and misdirection, was left well and truly skewered. I can’t remember the last time I enjoyed a radio interview this much.