European shares retreat, London nervous ahead of GDP data

(Reuters) - European shares slipped on Monday as fresh round of protests in Hong Kong, worrying data from China and Moody's warning on Britain's sovereign debt made for a gloomy start to the week.The pan-European STOXX 600 index fell 0.2% by 0817 GMT, with London's FTSE 100 leading declines among the major regional indices with a 0.6% fall.Ratings firm Moody's warned on Friday it might cut its rating on Britain's sovereign debt again, saying that neither of the main political parties in next..