Cable had looked very steady around 1.70 for a few days and perhaps the bulls were getting a bit complacent but the 300 pip fall after the BoE will have shaken everyone up a bit. These moves might have a psychological effect on AUD and NZD long positions. Look for AUD/USD support towards .8350 to be tested this morning and see if those Sovereign bids are in fact there.
Good luck today.