With two polls being unleashed on the markets today indicating the largest lead for Brexit over Bremain yet with regard the UK referendum, it seems FX traders at least have begun to wake up to the short-term uncertainties a “leave” vote may entail. A short-term measure of expected price swings for the pound climbed for a third week as traders sought protection as two-week implied volatility, a period that covers the June 23 voting date, closed at its highest on record today.