Sterling falls as concerns persist over negative rates, Brexit

LONDON (Reuters) - Sterling retreated below $1.23 on Wednesday as investor focus shifted back to the possibility of negative interest rates in Britain and comments from government officials that not much progress had been made in Brexit negotiations.Bank of England Chief Economist Andy Haldane on Tuesday played down the prospect of imminently taking rates into negative territory, saying that "reviewing and doing are different things."But analysts believe that once the talk of negative rates has..