Started on the tools. Now delivering advanced PPM & PC projects.
ADS began in 2004 as a small electrical firm working across Preston and South Ribble. Clients kept asking whether we could look after the mechanical side too — the boilers, the ventilation, the hot water plant. So we trained, recruited and built the second half of the business.
Today we deliver planned preventative maintenance contracts and act as principal contractor on projects nationwide. The work has grown; the way we run it hasn’t. Engineers are employed, not agency. The person who surveys your site is the person who signs off the plan.
We are based on Dollywaggon Way in Bamber Bridge, which puts a van on most sites in Lancashire well inside our four-hour response commitment.



To be the North West’s most friendly, efficient and trusted contractor.
To provide an accurate diagnosis and a first-time fix for all our customers, wherever possible.
To keep our customers’ homes and businesses comfortable, safe, compliant and energy efficient.
To be at the heart of our clients’ building maintenance and development.
Four values we will not compromise on
We believe that true quality comes from doing the foundational mechanical and electrical tasks consistently.
Customer service
We are professional, patient and prompt, and we put our customers first. Listening to them is central to how we develop the business and improve the experience.
Quality of service
We deal with clients in a positive, respectful and helpful way — efficient, industry compliant and focused on building good long-term relationships.
The people behind ADS Limited
Our service desk is staffed by people who know the sites. You will speak to the same names each time you call.








