The British pound sterling was giving back the gains as price action fell on Brexit related news.
The declines coincide with the 1.3300 level where support is currently holding. As long as this level holds, GBPUSD could remain biased to the upside.
But a close below this support will open the way for further declines. The next key support level to the downside is near the 1.3122 price region.
To the upside, for now, the trend line is acting as a dynamic resistance.
Therefore, price action needs to break above this level to continue further.