KOLKATA: A day before Mamata Banerjee leaves for London to woo investors, Trinamool Congress has revealed that its leaders have received numerous emails and phone calls — purportedly from Hindu radical groups based in Britain — threatening the chief minister to call off her UK trip and asking British industrialists not to invest in Bengal.

Derek O'Brien, the party's national spokesperson and leader of the opposition in Rajya Sabha, who received 10 such emails in the past 24 hours, has filed a police complaint and urged police commissioner Surajit Kar Purkayashta to hold a thorough probe. The matter has also been referred to the Indian High Commission in London. The London Metropolitan Police is also expected to be apprised of the development. It is learnt that party general secretary and MP, Subrata Bakshi, has also received threat calls.