I see now, thx for answering.I did say that it was a stop-hunting from the market-maker, not from your broker.
The price action you described was seen at many, if not all, brokers, but nevertheless
it was a typical stop-hunting from the market-maker, that is from the very huge ever-hungry
shark, which can afford to control the way GBP/USD quotes. (Yes, it does exist. )
Its sad that such things like controlling quotes exist