'IF I catch you stuffing food into that pouchy slab of a face once more, I'm going to twat you one' would've been the first words I'd have uttered to John Prescott if I was the counsellor treating him for bulimia – but there again I know how to speak to him, I know it's the only way he’ll listen: you want to know why I know this? It's because as a high-flying QC, best-selling writer and last-but-not least, mother of four children – I've learnt to trust my instincts.

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