On friday I went to trade short on GBR/USD with a stop of 20 pips which is usually acceptable on IGindex.
However, it required a minimum stop of 45 pips???!?!
Was this because of the Non Farm Payroll data and the fact that they presumed it would be a day of high volatility.
Absolutely correct. I've used IG Index before for GBP/USD and placed a stop loss of 15 pips when the market is quiet. As you say, during periods of high volatility, the minimum stop loss jumps to 45 pips.