The S10 CBRN Respirator is a military gas mask that was formerly used within all branches of the British Armed Forces. Following the mask's replacement by the General Service Respirator in 2011, the S10 is now widely available to the public on the army surplus market.

Avon Protection plc is a British company that specialises in the engineering and manufacturing of respiratory protection equipment for military, law enforcement and fire personnel. Its corporate headquarters are 3 km (1.9 mi) south of Melksham in Wiltshire, England, at the Hampton Park West development. It is listed on the London Stock Exchange.