GBP/USD: With the pair having lost upside pressure to close lower on Thursday, more weakness is likely. On the downside, support  lies at the 1.3150 level where a break will turn  attention to the 1.3100 level. Further down, support  lies at the 1.3050 level. Below here will set the stage  for more weakness towards the 1.3000 level. Conversely, resistance stands at the 1.3250 levels with  a turn above here allowing more strength to build up towards the 1.3300 level. Further out, resistance  resides at the 1.3350 level followed by the 1.3400  level. On the whole, GBP/USD threatens further downside pressure though with caution