Camaiken98

Hi all, A simple question really, when an instrument’s price gaps up over a buy stop order, is the order filled at the set level? Or is it filled at the best available price due to the gap? For example, if an instrument was trading at £50 and I believed it was going to increase, so I create a buy stop order with a level of £52, but then the price gaps up to £55, would the executed order fill at the level of £52? Or would it fill at a price closer to the gapped up price? thanks in advance.