Glossary
A landlord will usually want to limit the activities that can be carried out at the premises for a number of reasons e.g. to ensure that there is no breach of planning law, that you do not annoy neighbouring tenants, that your proposed use does detrimentally affect the value of the property. You should agree a use that ensures that you can operate your business but that is not so restrictive that it limits any diversification of your business that may occur during the term.
Negotiation tip: try and agree a use that is restricted only to one of the planning Use Classes. If you want to reserve the right to change the planning use of the premises then ensure that the landlord can not unreasonably refuse permission to change the permitted use.