ISTL have a history of working for the most professional and successful developers and contractors inculding:

  • Bellway Homes
  • Bovis Lend Lease
  • Leadbitter Construction
  • Midas Construction
  • Ty-Croes

For such end users as:

  • MOD

  • Linc Cymru
  • The Guinness Trust
  • Gwalia
ISTL use a small number of specialist sub-contractors to allow a dedicated team to concentrate on each system.  They include:

  • ADC Communications
  • Elite Aerial Services
  • Hall & Kay
  • Smoke Ventilation Systems
  • Temperature Control
  • Siemens Build Technology