UK CPC group established circa 1989 by [[Hangman|Rob Scott|Hangman]]. STS, for Secretsoft Technical Services, was a general CPC coding and cracking group rather than specifically a demo-group. Several of the most well-known members of the early 1990s UK Amstrad scene took part in STS. STS's slogan was "STS - it's a load of old w-nk", complete with accompanying theme tune which could occasionally be heard in issues of [[BTL]].
STS continues in the form of [[Hangman]]'s Leatherhead computer shop, [http://www.stscomputers.co.uk/ STS Computers].