GBPUSD has likely end of 5 waves moving down. Base on channeling technique, wave 5 is likely end. Also, RSI between wave 3 and 5 shows divergence and tweezers candle pattern support that price tend to move up. But there are some counter reasons included RSI of wave 3 does not show extreme (usually extreme) and RSI of wave 5 not higher than of wave 3 (its equal, mean that momentum up is less strong).
There are not any fibonacci relation too.
So, this is weak recommend. You can try.