Certified Group Ltd

Reviews (254)

• 10

  Helpful, reliable and professional

  Posted 1 day ago

  Really impressed with the service from Aziz. He was quick to respond, turned up bang on time, and got everything sorted very efficiently with no fuss. He was very professional throughout, and what I really appreciated was that he even called me beforehand to talk me through what to do when he couldn’t get there straight away. Would definitely use again and recommend.
  Job location: SE10
• 10

  Excellent work, brilliant service

  Posted 22 February

  Aziz and his team at Certified have done more work for me since last year: really extensive jobs. My house needed reroofing and I wanted to rebuild the deck in my garden. This was all the work of some months. Aziz and his team were incredibly hard working, thorough, and the quality of their work shines through. Aziz will always show you what he's doing as he's doing it, so you can see what's being removed and what is being installed. He is extremely friendly, helpful and polite and so are all his team. I was always kept updated. Not the cheapest but worth it.
  Verified reviewer
  Job location: E2
• L
  Lucy B
  10

  Heating repair, bathroom repair, leak repair

  Posted 07 December 2025

  Aziz and Chris are outstanding. They are so thorough with their work and everything is completed to an extremely high standard. They are both lovely people and a pleasure to have in the house. They are very punctual and excellent at communicating. We are so grateful to them for repairing various plumbing issues and they will be our first port of call for anything in the future.
  Verified reviewer
  Job location: BR8
• 10

  Installation of boiling and heating system

  Posted 31 October 2025

  Aziz and Chris did a fantastic work of installing a new boiling and heating system in our apartment. Certified Group agreed to take this installation work in a very short notice and that too in the end of October just ahead of winter season which is highly anticipated. They managed to effectively complete the installation in 5 working days which involved dismantling existing boiling and heating system, procuring materials for installing new system, providing demo of the new system. Both Aziz and Chris had great knowledge and skill and were experts in this installation. Highly recommended!
  Job location: SE3
• 10

  Brilliant Service

  Posted 03 August 2025

  Absolutely Outstanding Central Heating Service! From start to finish, this company exceeded every expectation. I was initially nervous about replacing my old central heating system, but their team made the entire process smooth, stress-free, and surprisingly enjoyable. The quote was clear and competitive, with no hidden costs or last-minute surprises. The engineers arrived exactly when they said they were professional, respectful, and clearly passionate about their work. They took the time to explain what they were doing, answered all my questions, and left the place spotless. Thank you
  Job location: SE10
• 10

  Helpful and efficient

  Posted 10 July 2025

  I've used Aziz and his team for a few jobs now; he's always great to work with with — and the work itself is great. I had a slow leak in a pipe in my living room, skirting board had to be removed, pipe exposed and repaired and the whole made good. Aziz and his team did exactly what they said they would, they are always so courteous and kind, and they do the work beautifully and also clean up beautifully. I highly recommend them.
  Verified reviewer
  Job location: E2