Labour cabinet and Canabis

I just read a nice article on this at Chicken Yoghurt which starts with the lovely line - "All these politician who smoked cannabis at university but didn’t like it: how unlucky were they? What are the odds that every single one of them scored rubbish gear? It’s damned unlucky, I reckon." Surely there must be a British politician who really enjoyed smoking weed when at University but who stopped when they started work because that was what was expected?