GBPUSD remains in downtrend from 1.6339, the rise from 1.4831 would possibly be consolidation of the downtrend. Key resistance is at the downward trend line on daily chart, as long as the trend line resistance holds, the downtrend could be expected to resume, and another fall towards 1.4500 is still possible. On the upside, a clear break above the trend line resistance will indicate that the downtrend from 1.6339 has completed at 1.4831 already, then the following upward movement could bring price to 1.7000 zone.
For long term analysis, GBPUSD is in downtrend from 1.6745 (Apr 28, 2011 high). Further decline to 1.4500 area could be expected over the next several weeks.