STS provide comprehensive electrical installation services supported by in-house design and control panel manufacturing capabilities. We work in a wide range of commercial and industrial sectors, specialising in Building Management Systems (BMS) and have a track record of ensuring that the engineered solution is built and delivered to agreed standards and programmes, within budget and in compliance with CDM, SHE and client specific requirements.

All STS operatives have appropriate technical qualifications alongside industry recognised health and safety training. Site managers and supervisors are accredited to SSSTS or SMSTS level to ensure our activities are suitably reported and coordinated with our clients project team. We ensure all site personnel hold suitable ECS cards as well as up to date training on any specialist plant or equipment that we may use on site.

STS provide clients with a high quality and reliable service, our aim is to establish mutually beneficial long-term partnerships. STS are NICEIC accredited (Certification Number 609718000) for all electrical installation work and benefit from Group wide support in both in terms of financial resources and backing as well as QMS and HS&E accreditations.

We have significant experience of delivering large scale projects and can mobilise an experienced site team in excess of 80 operatives to fulfil the most demanding programme requirements.


STS control panel manufacturing services operate from our facility in Maidstone, Kent. The Panel Shop comprises manufacturing capacity of 110m2 accommodating our team of wiremen, designers and workshop management which are supplemented by our field teams when specific project requirements dictate. We have a dedicated Electrical Test Bay, Bonded Store and 45m2 storage area complete with 4m roller shutter loading bay enabling us to accommodate multi-section panels up to overall lengths of approximately 8m if required. Our supply chain arrangements ensure managed minimum stock levels of key switchgear and enclosure materials are maintained. STS are an authorised reseller for Schneider Electric and other leading brands to ensure highest quality components are utilised.

The fully equipped Test Bay ensures that all our control panels and assemblies are tested in-house as well as offering FAT (Factory Acceptance Test) services to our clients. We have invested in simulator rigs to ensure simulations of software can be easily accommodated. As part of this service we also provide a canteen area and dedicated office/meeting room to ensure separate space away from our operations in which to conduct your external client testing.

The in-house design team operates AutoCAD standard electrical schematic software to ensure full compatibility with industry standards. We can provide a turnkey design and manufacture service or work to client design schematics as required. Our capability extends from simple control assemblies and automation panels through to Form 2, 3 or 4 cubiclized motor control panels. We offer solutions utilising bespoke metalwork and bus bars or modular enclosure based solutions to meet all project specifications.


STS Site Technical Services comprises a dedicated team of field based BMS site technicians and project managers operating from fully equipped vans. Capable of carrying out one day remedial works, small projects and multiple weeks’ projects alike, the team operate nationally as required to provide a one-stop shop service for BMS installations.

We specialise in carrying out panel upgrades and controller changeovers where we co-ordinate alongside our panel shop operations to develop pre-fabricated assemblies ensuring minimum site disruption and downtime.

We are in the process of enhancing our offering to include pre-commissioning and testing services which we believe offers significant value to BMS integrator and manufacturer clients alike.

Operating separately from our main project installation teams, yet able to draw from the project labour resource as required, STS Site Technical Services operate closely with our client allowing BMS Commissioning teams to concentrate entirely on dynamic software testing.

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