Royal Mail union votes overwhelmingly in favour of a nationwide strike

(Reuters) - Britain's Royal Mail staff want to go on a nationwide strike, the Communications Workers Union (CWU) said on Tuesday, after it alleged that the company failed to adhere to a pension deal signed last year.CWU said more than 97% of a ballot of roughly 110,000 British postal workers were in favour of going on strike. Some 76% of its members working in Royal Mail voted in the ballot, the union said..