S&P keeps negative outlook on UK sovereign rating after Brexit vote

By David Milliken LONDON (Reuters) - Ratings agency Standard & Poor's said on Friday Britain's sovereign credit rating remained at risk of a further downgrade because of ongoing uncertainty about the country's future outside the European Union. "In our opinion, Brexit presents a significant risk to the UK's track record of strong economic performance, and to its large financial sector in particular," S&P said, as June's vote had created "a less predictable and stable policy framework". S