LONDON (Reuters) - Britain's economy grew at its weakest annual pace in more than seven years in November, raising expectations that the Bank of England will cut interest rates later this month.Monday's official figures showed the economy in November - before last month's decisive election win for Prime Minister Boris Johnson - was just 0.6% larger than a year before, the weakest expansion since June 2012.The November figure represented a slowdown from annual growth of 1.0% in October, after..