17 Juni 2016, GBP/USD
Perhaps the price has completed to form the wave 1 of iii downward momentum. At the same time, probably, it is developing the correctional wave 2 of iii.
So far, the correction looks unfinished, so in the near future we can expect a continued flat. However, no matter how the situation can develop, trading with the pound before the referendum is not necessary, as everything can happen.