GBP/USD has broken the key resistance at 1.6668 (24/01/2014 high). The short-term technical structure remains positive as long as the support at 1.6693 (intraday low) holds. Another support can be found at 1.6600 (intraday low).
In the longer term, the technical structure favours a bullish bias as long as the support at 1.6220 (17/12/2013 low) holds. The decisive break of the resistance at 1.6668 opens the way for a move towards the major resistance at 1.7043 (05/08/2009 high). However, a sustainable move above that level is unlikely in the next few weeks.