Retracements are shown in post Brexit for both GBPUSD and EURUSD. On the daily chart, GBPUSD has a brief break and close above the recent high before making it way to its retracement.
On the 1-hourly chart, there's an inverted descending triangle formation which could probably break and close below the bat pattern formation.
If the market retest the trendline with a long shadow candle, I'll short GBPUSD and observe if the market consolidates at D point on the harmonic pattern.