By August Graham, PA Business Reporter & Lawrence Matheson ITV’s show, Mr Bates vs The Post Office, has made such a splash in the UK that it’s been snapped up by 12 international broadcasters, despite its “particularly British,” theme, according to ITV’s boss. Carolyn McCall expressed her pride in how the programme has highlighted the struggles of subpostmasters and sparked changes in the law. The announcement came as ITV reported a dip in profits last year due to difficulties in attracting advertisers to traditional TV ads. Chatting with reporters on Thursday, Ms McCall said: “We’re very prou…