While we don't verify specific claims because reviewers' opinions are their own, we may label reviews as "Verified" when we can confirm a business interaction took place. Read more
To protect platform integrity, every review on our platform—verified or not—is screened by our 24/7 automated software. This technology is designed to identify and remove content that breaches our guidelines, including reviews that are not based on a genuine experience. We recognise we may not catch everything, and you can flag anything you think we may have missed. Read more
Complii is a leading integrated provider of safety and regulatory compliance services across water and air, fire and security, electrical, and lifts and escalators. We support teams across complex, multi-site estates throughout the UK. As a trusted compliance partner, we work across many sectors, including hospitality, leisure, healthcare, education, retail and commercial property to reduce risk, assure regulatory compliance, and protect people, businesses and assets. Delivered through specialist divisions, our services provide high-quality, reliable outcomes. By consolidating multiple compliance disciplines under one trusted partner, Complii reduces supplier fragmentation, providing clear, comprehensive, cost-effective solutions all in one place. We simplify complex compliance legislation, providing you with assurance and confidence that compliance is being managed effectively. Working side by side with our clients, we deliver essential risk, regulatory, and compliance services across the built environment – helping to meet obligations, protect assets and reputations, and ensure the safety of customers and your workforce. From assessment and advice through to servicing, testing, and ongoing support, we focus on quality. We’re not just a supplier – we’re your trusted compliance partner, offering clarity, control, and peace of mind. We’re by your side, every step of the way.
Written by the company
85 Great Portland Street, W1W 7LT, London, United Kingdom
Statutory fire detection maintenance went very smoothly. two fantastic engineers on site who certainly knew what they were doing. A small number of remedial actions to take, but all round a seamless experience
Reply from Complii
Hello,
Thank you for leaving a review. We're happy to hear that the job went smoothly. It's great to know our engineers' expertise made the experience a positive one.
Best wishes,
Complii
Great support for our PAT testing. Quick, easy, and informative.
Reply from Complii
Hi Sam,
Thank you for the positive feedback - we're so glad to hear that your PAT testing went smoothly.
Best wishes,
Complii
Complii merged a company that was the incumbent supplier/consultant for one of my clients. Many doubts were raised about the capacity to deliver during the first months after this merging. I must say that this transition has been almost seamless and whenever we have faced a challenge, they have had the right processes and people to face them, being transparent all the way.
Recommended to have them as a trusted and valuable business parter.
Reply from Complii
Hi Manuel,
Thank you for taking the time to share such a considered and detailed review.
We’re especially pleased to hear that the transition felt seamless from your perspective. We recognise that periods of change can bring uncertainty, so it’s encouraging to know that our focus on strong delivery, clear processes, and transparent communication helped provide confidence throughout.
Your comments around risk management and responsiveness reflect what we strive to deliver every day – being your Trusted Partner for building compliance. Supporting our clients through complexity with the right people, expertise, and approach is central to how we operate.
We truly value your trust and partnership, and we look forward to continuing to support you and your clients in the future.
Best wishes,
Complii
Communication was very friendly and efficient, all works carried out with little disruption, Izabella was warm friendly and polite.
Reply from Complii
Hi Mike,
Thank you for leaving us a review, we're glad the works went well!
We look forward to working with you again in the future.
Best wishes,
Complii
Anyone can write a Trustpilot review. People who write reviews have ownership to edit or delete them at any time, and they’ll be displayed as long as an account is active.
Companies can ask for reviews via automatic invitations. Labeled Verified, they’re about genuine experiences.
Learn more about other kinds of reviews.
We use dedicated people and clever technology to safeguard our platform. Find out how we combat fake reviews.
Learn about Trustpilot’s review process.
Here are 8 tips for writing great reviews.
Verification can help ensure real people are writing the reviews you read on Trustpilot.
Offering incentives for reviews or asking for them selectively can bias the TrustScore, which goes against our guidelines.
