I have guests due to attend on 28/12 but they live in Tier 4 so should not travel. They were in Tier 3 and therefore the advise was not to travel but they never contacted me. If I cancel them I get charged but I should not allow them to visit a Tier 2 area. But if they cancel theoretically they should not be refunded any money, (although I'm more than happy to compromise with this). Can anyone advise? I can't get any help from the help centre and none of their articles answer the questions.