The cost of professional septic tank emptying in the UK typically ranges from £200, depending on factors such as the size of the tank, its location, and the specific service provider. Larger tanks and those in remote or difficult-to-access areas may incur higher costs. Some companies also offer bundled services that include inspections or minor repairs, which can affect the overall price. It’s advisable to obtain quotes from multiple service providers to ensure you’re getting the best value for your money while maintaining the quality of service.