All serious money managers know that the smart money is made not when the market is stable but when the market goes through a sudden state of change. Take for example, the end of a bull run or the imploding of an asset bubble.
The BoE also said it was ready to take additional measures if needed. The decline of the currency is certainly beneficial for exports from the United Kingdom, though it penalizes consumption of imported products.
Bollinger bands actually comprise three separate indicators and each tells you something about the price activity at a current point in the chart. This article looks at the Bollinger indicator, what each component of the indicator means.