By William Schomberg and Sachin Ravikumar LONDON (Reuters) – British wages grew at the slowest pace in almost a year, according to official data published on Tuesday that added to signs of a gradual cooling of the inflationary pressure in the labour market that has worried the Bank of England. Growth in wages excluding bonuses slowed for a third release in a row to an annual 6.6% in the September-to-November period compared with 7.2% in the three months to October, the Office for National Statistics said, matching the median forecast in a Reuters poll. It was the weakest increase in regular ea…