FXStreet (Edinburgh) - The sterling has surrendered its initial gains vs. the greenback on Tuesday, now quickly dragging GBP/USD to session lows in the mid-1.5200s. GBP/USD weaker on UK’s CPI The pair is coming down after hitting fresh tops in the vicinity of 1.5400 the figure propped up by market chatter in the M&A sector in early trade. However, the up move seems to have run out of steam, triggering a correction lower that was later exacerbated by inflation figures below expectations. In fact, UK’s consumer prices have contracted 0.1% on a year to September and 0.1% on a monthly basis, both prints missing previous estimates. Core prices also followed suit, rising 1.0% on a yearly basis vs. 1.1% anticipated. GBP/USD important levels As of writing the pair is losing 0.56% at 1.5264 and a breakdown of 1.5138 (up trend from ytd low) would expose 1.5107 (low Oct.1) and then 1.5089 (low May 5). On the other hand, the initial hurdle aligns at 1.5405 (55-day sma) ahead of 1.5443 (Fibo 38.2% of 1.5658-1.5107) and then 1.5493 (down trend from August tops). For more information, read our latest forex news.