Express Chemist The regular delivery service for UK orders is the Royal Mail Tracking Service, which costs £3.29 or £4.49, depending on whether you choose Standard or Priority. They also provide ParcelForce and Royal Mail Express. Some people like them because they provide a more reliable service. The flat price for ParcelForce orders in the UK is £6.99, and the starting price for express mail is £7.00, which is increased due to the weight (maximum weight 2kg).