Port Eliot Festival ; every July ; tickets from £20 ( $ 31 ) Eton-educated British PM David Cameron spotted at `` Poshstock '' festival . Are mud-splattered headbanger fests under threat ? The answer is Interval chat might include world 's best tax-free havens .
Eton-educated British PM David Cameron spotted at `` Poshstock '' festival . Are mud-splattered headbanger fests under threat ? The answer is Interval chat might include world 's best tax-free havens .