Spyker

A manufacturer of a range fertiliser and grass seed spreaders, with the Ergo Pro-Series and Pro-Series.
SQA

Scottish Qualifications Authority.
SRU

Acronym for the Scottish Rugby Union. It was originally formed in 1873 as the Scottish Football Union.
Stadia Sports

A manufacturer and supplier of sports equipment, including for football, rugby, tennis, hockey, cricket, and more.
Steelmaster

A manufacturer and supplier of a wide range of aeration tines for a range of machinery makes.
Stihl

Manufacturer of a range of turf care equipment.
STM Co. Ltd

A supplier of grounds care machinery: Simon Tullett Machinery (STM).
STMA

Sports Turf Managers Association, which was rebranded as the SFMA in 2022.
STRI

Acronym for the Sports Turf Research Institute; formed in 1929 originally as The Board of Greenkeeping Research, reconstituted as STRI in 1951.
Stuart Canvas Ltd

Manufacturer and supplier of a range of sports surface frost and rain covers, as well as cricket sight screens, batting cages, germination sheets, artificial cricket pitches, tennis posts and nets, football goals and rugby posts.