OnTime CMS
Accepts Checkatrade Pay
Customer Reviews
Write a review9.96 /10
Based on 9 reviews over the past 12 months
Quality of work
10
Reliability
9.89
Communication
10
Reviews (96)
10 Gas Boiler Servicing / Repair
Posted 2 days ago
Gas Inspection
Highly satisfied ! Great work, great communicationVerified reviewerJob location: SE16RGuillaume Will DResponse from OnTime CMS
Thank you very much, Guillaume, for your kind review. I'm pleased you were happy with the service and communication. I really appreciate you taking the time to share your feedback. Kind regards, Kem OnTime
10 Gas Boiler Servicing / Repair
Posted 20 July
Simply superb.
Kem is a genuine hero. Not only is he a lovely bloke, he also really knows his stuff. He came and promptly and professionally resolved a situation that was causing much stress to the family. I cannot rate him more highly. We are so grateful to him. Recommended. 10/10.Verified reviewerJob location: BR29.67 Gas Boiler Servicing / Repair
Posted 11 July
Boiler moved and replaced.
Kem was great, they worked really hard, did exceptional work, kept me informed of everything. Couldn't be happier honestly.Verified reviewerJob location: BR8RDaniel S10 Gas Safety Checks - CP12
Posted 09 February
Kem was super helpfull
I hired Kem to move some gas pipes and install my oven, and I couldn’t be happier with the service. From start to finish, the process was swift and smooth. As someone who knows nothing about gas pipework, I really appreciated how Kem was super clear in explaining exactly what needed to be done. He was incredibly kind and friendly throughout the day, and all the necessary safety certificates were provided promptly after the work was finished. I highly recommend his services for anyone looking for a reliable, certified engineer!Verified reviewerJob location: SE1010 Gas Boiler Servicing / Repair
Posted 02 January
Gas Boiler Service
Great guy, great service, great work very professional and very experienced. See you next year for my next service 👍🏿Verified reviewerJob location: SE18Rsam a10 Unvented Hot Water Cylinder Installation
Posted 07 December 2025
Fantastic unvented cylinder installation
Kem was fantastic from start to finish. I found him on Checkatrade with amazing reviews, and he lived up to every word. Very responsive, friendly, tidy and professional, he inspected my tank, gave great advice and answered all my questions. The unvented cylinder installation was done to an exceptional standard. He installed the timer and even helped me take a photo of my water meter, which was extremely difficult to access. When my sink cartridge failed, he guided me instantly and came out the next day. I appreciate all the hard work and care he put into the job, I will definitely recommend!Verified reviewerJob location: SE14RLe T
Photos
Company Info
Owner
Mr. Kemal Mustafa
Sole Trader
5 years on Checkatrade
VAT Registered
No
Welcome to OnTime CMS
OnTime is a local, independent plumbing and heating business based in Chislehurst, serving Bromley and surrounding areas.
We specialise in domestic boiler breakdowns, fault finding and repairs. When something goes wrong, we focus on identifying the cause, explaining our findings clearly, and giving honest advice on the available repair or replacement options.
Our services include:
- Boiler breakdowns, diagnostics and repairs
- Boiler servicing and installations
- Central heating and hot water repairs
- Landlord Gas Safety Certificates (CP12)
- Unvented hot water cylinders
- Radiators, heating controls and power flushing
- Wet underfloor heating and general plumbing
We pride ourselves on honest advice, reliable appointments, tidy workmanship and a friendly, professional service.
This trade passed up to 12 Checkatrade vetting checks
Member since October 2021
Individual checks
Identification
Proof of address
Financial
Qualifications and accreditations
County court judgement
Open source media
Business checks
Customer Reviews
Company trading history
Company duplication
County court judgement
Enhanced business check
Director checks