Extech IR200 Infrared Thermometer - £16.50 @ Amazon

Ideal for quickly detecting elevated body temperatures, the IR200’s non-contact design eliminates the need for replacement probe covers and other supplies while reducing potential spread of diseases from using contact devices. The IR200 stores up to 32 readings and can be used to monitor groups or individuals for temperature change. A large backlit LCD display makes monitoring and recording temperatures quick and easy. Adjustable alarm alerts user visually and audibly when temperature exceeds programmed limit.