Despite initial dip to 1.5271, GBP/USD rebound strongly since then. Initial bias is neutral this week and some consolidations would be seen between 1.5271/5715. But after all, break of 1.5715 is needed to confirm short term bottoming. Otherwise, we'll stay bearish and expect another decline sooner rather than later. Break of 1.5271 will target 161.8% projection of 1.6746 to 1.5780 from 1.6618 at 1.5055 next. Though, break of 1.5715 will likely bring stronger rebound, possibly towards 61.8% retracement of 1.6618 to 1.5271 at 1.6103 before staging another decline.
In the bigger picture, rise from 1.4229, which is treated as the third leg of consolidation from 1.3503 (2008 low) should be finished at 1.6746 after GBP/USD completed a head and shoulder top reversal pattern (ls: 1.6298, h: 1.6746, rs: 1.6618). Fall from 1.6746 could be the fourth leg of the consolidation pattern from 1.3503 (2008 low) or resuming long term down trend from 2.1161 (2007 high). In either case, retest of 1.4229 support should be seen. Break of 1.4229 will bolster the down trend resumption case and would possibly push GBP/USD through 1.3503 low. On the upside, break of 1.6618 resistance is needed to invalidate this view. Or we'll now stay cautiously bearish in GBP/USD.
In the longer term picture, the corrective nature of the multi-decade advance from 1.0463 (85 low) to 2.1161 as well as the impulsive nature of the fall from there suggests that GBP/USD is now in an early stage of a long term down trend. Another low below 1.3503 is anticipated after consolidation from 1.3503 is confirmed to be completed.