Coronation Street star Beverley Callard is facing a probe after her acting firm allegedly failed to settle a £100,000 tax bill. Callard, 67, played Liz McDonald in the ITV soap and is under investigation by the HMRC after failing to pay £215,000 in debts, including the £100,000 tax bill, according to The Mirror. Pictured is Liz McDonald, as played by …