MILAN (Reuters) - The UK's top share index rose for a fourth day in a row on Wednesday, helped by strong financials and exporters bolstered by a weaker pound, while a lowered outlook hit bookmaker Paddy Power Betfair.The FTSE 100 ended the session up 0.8 percent at 7,776.65 points, touching an 8-week high earlier in the session and outperforming its peers in Europe, as a fall in the pound gave a lift to the exporter-heavy index."It's more to do with an extension of sterling weakness as fears..