British pounds mostly affected by headline news surrounding Brexit have since been a volatile currency.
Look at the GBP/JPY pair 4 hours chart below, the pair has being trading in a range from the November 2018. This level is termed as a balancing area after a sharp downtrend.
The pair is now trading below the Moving Averages 100, 34 and 20. A close below 144.00 support would see the pair continued its downtrend to possibly find another round of support at 142.51