British Prime Minister Theresa May on Wednesday accused Brussels of deliberately making "threats" over the Brexit talks in order to affect the outcome of next month's general election.

"The European Commission's negotiating stance has hardened. Threats against Britain have been issued by European politicians and officials," she said  outside her Downing Street office.

"All of these acts have been deliberately timed to affect the result of the general election that will take place on June 8."