- Gas Safety Check Saltburn-by-the-Sea
- Gas Safety Check Scarborough
- Gas Safety Check Scunthorpe
- Gas Safety Check Seaham
- Gas Safety Check Selby
- Gas Safety Check Sheffield
- Gas Safety Check Sherburn-in-Elmet
- Gas Safety Check Shildon
- Gas Safety Check Shipston on Stour
- Gas Safety Check Shoreham-by-Sea
- Gas Safety Check Skelmanthorpe
- Gas Safety Check South Cave
- Gas Safety Check South Elmsall
- Gas Safety Check Southam
- Gas Safety Check Speen
- Gas Safety Check Spennymoor
- Gas Safety Check Stanley
- Gas Safety Check Staveley (Derbyshire)
- Gas Safety Check Stockton-on-Tees
- Gas Safety Check Stokesley
- Gas Safety Check Stourport-on-Severn
- Gas Safety Check Stratford-upon-Avon
- Gas Safety Check Stroud
- Gas Safety Check Studley
- Gas Safety Check Sunderland
- Gas Safety Check Sutton on Sea
- Gas Safety Check Swinton (South Yorkshire)
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