GBP/JPY failed to break through 123.79 resistance last week and retreated sharply. The development mixed up recent outlook and we'll stay neutral first. On the upside, break of 123.77/79 resistance will confirm completion of the pull back from 125.82. More importantly, this will argue that whole rebound from 118.82 is resuming for 125.82 and above. On the downside, however, break of 120.82 will extend the decline from 125.82 to retest 118.82 low.
In the bigger picture, there was so far no impulsive upside move after GBP/JPY formed a medium term bottom at 116.83. On the other hand, there was no sustainable selling neither. The development argues that even though there is no clear sign of trend reversal in GBP/JPY, it's more likely engaging in sideway consolidations, which corrects fall from 163.05. That is, we'd probably see more range trading between 116.83 and 140.02 (50% retracement of 163.05 to 116.83 at 139.94) ahead, before an eventual downside breakout.
In the longer term picture, fall from 251.09 is treated as resumption of multi decade down trend. Current development gives no indication of medium term reversal yet and GBP/JPY would likely drop towards 100 psychological level on down trend resumption.