A lot of people here probably don't know that the Pound suffered a flash crash last week:
FTSE 100 slips after hitting record high, as pound extends falls - BBC News
It hit $1.14 but has since bounced back to $1.22 (at the time of posting). In some airports, 1 GBP was fetching less than 1 Euro for a short time at FX exchanges. However, many analysts are saying it could go as low as parity to the dollar.