GBPUSD: The pair tumbled on sell off on Friday leaving risk of further decline on the cards. Support lies at the 1.3700 level where a break will turn attention to the 1.3650 level. Further down, support lies at the 1.3600 level. Below here will set the stage for more weakness towards the 1.3550 level. Conversely, resistance stands at the 1.3800 levels with a turn above here allowing more strength to build up towards the 1.3850 level. Further out, resistance resides at the 1.3900 level followed by the 1.3950 level. On the whole, GBPUSD remains biased to downside.