GBPUSD extended its upside movement from 1.3711 to as high as 1.4215. Near term support is at 1.4075, as long as this level holds, the upside movement could be expected to continue and further rise towards 1.4345 (Jan 25 high) is still possible. On the downside, a breakdown below 1.4075 support could bring price back to test the support of the bottom of the price channel on the 4-hour chart. Only a clear break below the channel support could signal completion of the uptrend.
