As it was informed by "Market Leader (US)"
GBPUSD volatility preview for April 28th 2011
Yesterday GBPUSD managed to  consolidate above 1.6565 (a significant option barrier) and initiate an  upward momentum for it. 1.6750 is currently the closest resistance  level.
  Yesterday’s economic data on the UK  and US didn’t cause any considerable volatility hikes but laid the  foundation of trend continuation. The options were growing in value  because the price of the underlying asset was growing as well.