As it was informed by "Market Leader (US)"
GBPUSD volatility preview for Feb 22nd 2011
Last week the British Pound managed to  regain its positions against the US Dollar and reached the highs of  early February. After that GBPUSD started to decline because of the  reports about the situation in Libya. During the Asian session it  reached the option level at 1.6155. The destabilization in Northern  Africa may have a negative impact on the currency market and make GBPUSD  decline further down to 1.6100 and lower. The news background is weak.  So there will hardly be any reversal of the bearish tendency even  despite the fact that independent dealers expect the currency pair to  recover in the near future. The option barrier 1.6232 is the key  resistance. 1.6155 and 1.6000 are the key support levels.