Technically speaking, the GBP/JPY has already completed 61.8% retracement at 142.250. The same level is working as a solid hurdle for the pair. Taking a look at the 4- hour chart, you can see Japanese cross has formed a bearish candle exactly after testing 61.8% retracement level.
Is it a signal of bearish reversal?
Well, time will tell. But it's worth taking a risk with a small sell position below 142.650 to target 141.852. Good luck!