Critically evaluates the main changes to the Town and Country Planning (Use Classes) Order 1987 coming into force on 21 April 2005. Class A3 will be reserved for sit-down restaurants; sandwich bars and coffee shops will become A1 as long as no baking is done on the premises, and pubs and bars move to a new A4 category. Takeaways move to a new A5 with nightclubs removed from the system altogether. Considers that the changes were influenced by government licensing reform and foresees problems with the new definitions causing restrictions on uses of premises with consequences for business turnover. Details the negative implications for tenants expanding their restaurants to include takeaway sales and for those whose rent review clauses include assumptions on use. The changes are bad news for owners of food and drink premises and the licensed trade, and will increase planners' workloads but will benefit surveyors specialising in licensed property rent review.