(Reuters) – London’s blue-chip index struggled on Thursday to recover from a three-day slide driven by concerns about interest rate cuts coming later than expected, while shares of Watches of Switzerland slumped after a bleak forecast. The exporter-heavy FTSE 100 was flat at 0925 GMT, hovering near a seven-week low from the previous session after a slew of economic data and hawkish comments from central bank policymakers dampened sentiment. Meanwhile, the mid-cap FTSE 250 index edged up 0.1% after closing at a five-week low on Wednesday. Watches of Switzerland tumbled 28%, its worst fall on re…