A bearish bat setup for a trend trading trade, not quite sure at this moment if you would love to short it right away when market open or wait for further confirmation(that's more for me) as I have spotted all GBP related pair has a relatively strong bullish candle before market closes on Saturday(Singapore Time).
More read up on Brexit related topic on Bloomberg and make your decision o just simply wait for further confirmation or simply stay out of the trade.
Do note that pt C touches pt A too, typically not my favourite set and forget trade.