GBP/USD - 1.5687.. The British pound tumbled in tandem with euro in European morning trading y'day n despite intra-day weakness to 1.5560, profit-trading lifted price n rumour of a huge sell order in eur/gbp pushed cable sharply higher, cable rallied to 1.5718 in NY. Despite retreating on selling by Asian names in Asia, st specs are still buying cable on dips, bids are touted at 1.5670-40 region but good selling interest is seen abv said y'day's high.