Son inherits pub from deceased father.Son is working abroad.1.Does he qualify for 90% buisness tax relief exemption on IHT/CAT or will he have to pay the 33% on all.[the pub might have to be sold to pay this tax.]2.What are all the rules about qualifying fot this 90% tax exemption?,e.g.Does the son have to be running the buisness?Can he lease it out?.Can he have foreign citzenship[domicile]?.etc.etc.Many thanks.DK123.