The pound is heading to a two-year low against the dollar. It fell to below $1.25 and was close to its lowest level since April 2017, yesterday.
Sterling also fell to €1.11 against the Euro, a six-month low.
The currency falls mean UK travellers will get fewer dollars and euros for their pounds when they head abroad.
The referendum result back in June 2016 marked the start of a roller coaster journey for the pound. Before the vote the pound was worth $1.45 and €1.30.
Experts predict the pound may stabilise when the Conservative Leadership contest comes to an end on 22 July and the next steps for Brexit become clearer.