McWilliamsDouglas McWilliams , 63 , was reportedly seen at a London crack den . Top economist allegedly seen smoking two rocks last weekend . Witnesses claim he has been a regular at various drug dens for months . Professor Douglas McWilliams now says he is taking time off to deal with 'issues ' Economist will take a five-month sabbatical from the think tank CEBR .
Douglas McWilliams , 63 , was reportedly seen at a London crack den . Top economist allegedly seen smoking two rocks last weekend . Witnesses claim he has been a regular at various drug dens for months . Professor McWilliams now says he is taking time off to deal with 'issues ' Economist will take a five-month sabbatical from the think tank CEBR .