Shares at Enterprise Inns and JD Wetherspoon rose after analysts upgraded their ratings on the pub companies. Enterprise saw shares up 4.1% to 94.75p after Charles Stanley upgraded the group to "buy" from "hold". Wetherspoon shares increased 3.4% to 460p as the broker upgraded it to "add" from "hold". Shares in Punch Taverns, on the other hand, fell 5.2% to 81p as the effects of the recent bear squeeze began to wear off. The Independent (Business) p54