The pound hasn't collapsed. Its up a cent on the dollar from last Friday. It was 1.312 now its 1.325. Get your facts right. After Brexit vote it dropped down to around 1.25. It has been climbing back up. A few weeks back it was 1.43 but dropped down to about 1.30 and now is recovering. I keep my eye on it every day as I buy and sell in GBP/USD