The boss of the pub chain Greene King has called for changes to business rates to remedy “unfairness” that he said added to financial pressures on the struggling pubs industry. Nick Mackenzie, Greene King’s chief executive, said the business rates system of property taxes should be changed to a tax on profits. It said business rates were a factor in those closures. Pubs also tend to occupy high-value buildings, while being run on very tight profit margins, meaning business rates bills can be much larger than might be expected. Business rates costs for pubs increased this year.