Business Details
21 Years
experience
Expert Building Services Engineering Solutions
Callidus Design is a privately owned consulting engineering firm established in 2005, based in Livingston, Scotland. Our directors play an active role in every project, ensuring the delivery of high-quality professional services across mechanical, electrical, process, and building services engineering. We prioritise staff development and invest in cutting-edge IT infrastructure to maintain technical excellence. Our collaborative approach integrates design with architectural and structural elements, ensuring compliance with legislation while embedding sustainability into every project.With expertise spanning industrial, healthcare, education, and historical sectors, we deliver tailored solutions that meet client aspirations. Our repeat business reflects our commitment to clear communication, coordinated design, and exceeding energy efficiency targets. We specialise in troubleshooting and expert witness services, addressing complex challenges in building and process systems nationwide.
Services
Mechanical Engineering
Electrical Engineering
Controls Engineering
Public Health Engineering
Process Engineering
Expert Witness Services
Cleanroom Design
Humidification Systems
Acoustics Design
Troubleshooting
Details
- Year established: 2005
Highlights and features
- We deliver tailored engineering solutions since 2005 with active director involvement in every project
- Our team combines specialist knowledge in cleanroom and critical environment design
- We guarantee coordinated design integration with architectural and structural elements
- Our troubleshooting services address complex mechanical and electrical system failures
- We maintain ISO 9001 quality standards through rigorous internal processes
Services
Mechanical Engineering
We design comprehensive mechanical systems including heating, ventilation, and air conditioning. Our expertise covers low-temperature hot water systems, chilled water solutions, and energy recovery mechanisms. Projects range from small commercial installations to multi-million-pound developments, with specialist knowledge in industrial cleanrooms and pharmaceutical facilities.
Electrical Engineering
Our electrical design services encompass emergency lighting, standby generation, and uninterruptible power supplies. We specialise in complex industrial applications requiring precise environmental control. Additional capabilities include fire alarm systems, data infrastructure, and transportation systems, ensuring compliance with UK safety standards.
Controls Engineering
We implement advanced building management systems and process control solutions. Our expertise includes BMS/BEMS integration, PLC/SCADA programming, and energy monitoring. We optimise system efficiency through fault diagnostics, preventative maintenance strategies, and real-time data analysis for commercial and industrial clients.
Expert Witness
Our team provides forensic engineering services for building system failures. We conduct root cause analysis of incidents including water damage, electrical faults, and mechanical system failures. We prepare expert reports for insurance claims, arbitration, and legal proceedings across the UK.
Cleanroom Design
We specialise in ISO 14644-1 compliant cleanroom design for semiconductor, pharmaceutical, and biotechnology sectors. Our services include HEPA filtration systems, pressure cascade management, and environmental control to 1C and 5%RH. We integrate HVAC with contamination control protocols for critical manufacturing spaces.
People
Norrie Crawford
Director
Chartered engineer with extensive experience in mechanical systems design for industrial and healthcare facilities. Leads technical delivery across all projects.
Daniel Brady
Director
Specialist in electrical engineering solutions for complex buildings. Oversees power systems design and integration with building management controls.
Stewart Brown
Director
Process engineering expert with focus on cleanroom technology and critical environment design. Manages pharmaceutical and semiconductor sector projects.
Gary Speirs
Director
Building services specialist with expertise in sustainable design and energy efficiency optimisation. Leads forensic engineering investigations.
Questions
What sectors do you specialise in?
We work across industrial, healthcare, education, commercial, historical buildings, and renewable energy sectors.
Do you offer troubleshooting services?
Yes, we provide forensic analysis and fault investigation for mechanical, electrical, and process systems failures.
Can you design cleanroom facilities?
We specialise in ISO 14644-1 compliant cleanrooms with HEPA filtration, pressure control, and environmental monitoring systems.
Are you based in Scotland?
Our headquarters are in Livingston, Scotland, but we operate across the entire UK.
What accreditations do you hold?
We maintain ISO 9001 quality standards and work to BS EN ISO 14644-1 for cleanroom design.
Do you provide expert witness services?
Yes, we offer forensic engineering reports and expert testimony for building system failures and insurance claims.
