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Williams Electrics

5.0

91 Reviews

Opening Hours
Today -
  • Monday 08:00–18:00
  • Tuesday 08:00–18:00
  • Wednesday 08:00–18:00
  • Thursday 08:00–18:00
  • Friday 08:00–18:00
  • Saturday - Closed
  • Sunday - Closed

About

Based in Cardiff, Williams Electrics provides electrical services to domestic and industrial clients throughout Cardiff and the surrounding areas.

Although only established in 2009, the staff have many years of experience in the electrical/electronic industry.

Williams Electrics - all aspects of domestic, industrial electrical work, including replacement consumer units (fuse boards), house re-wiring, installing/changing light fixtures, additional sockets, external lighting, installation of power to garages and shed.

Please call to discuss the electrical work you need carried out in your home.

What we do

  • Electricians

    • Electrical installations
    • Electrical testing services
  • Lighting contractors

    • Outdoor lighting
    • LED lighting
    • Lighting LED upgrades
  • More Services

    • design and rewire of control panels
    • external lighting

Customer reviews

Why you can trust these reviews

All reviews are verified as being genuine and a true customer of this trader.

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100% of the reviews we publish have been through our stringent moderation process.

5.0
91 reviews
Customer Service
5.0
Quality
5.0
Value
5.0
Sort by
Good work by Trusted Trader
Customer Service
Quality
Value
Mark came to do several jobs just 5 days from our request. Very good advice given and then work carried out to high standard. Reasonable charge without any call-out charge added. We found Mark on Trusted Trader, so it shows how useful it can be.
Customer in Cardiff Posted on 25/02/2026 , work completed 20/02/2026
Great experience upgrading consumer unit
Customer Service
Quality
Value
We were recommended to Mark by a neighbour, and he has been helpful and courteous from our first interaction. We needed the consumer unit in our house upgraded, and Mark helped us understand the requirements and work with national grid ahead of the installation. On the day, Mark kept us informed of progress - finishing the work on time and to a high standard, all while also answering my many questions!
Customer in Cardiff Posted on 08/02/2026 , work completed 04/02/2026
Great Work (as usual) - Would highly recommend
Customer Service
Quality
Value
Great Work (as usual) - Would highly recommend Over the years, we have requested Mark's services many times. Each time, we have been impressed with his prompt, efficient, no-faff expertise. He is always reliable and prices are very reasonable. He is clearly very knowledgeable and takes the time to explain things clearly to customers (which is very helpful for people like me who know little about electrics). Even though we initially called Mark for 1 issue, he ended up solving 3 separate issues.... all within 24 hours of contacting him. Thanks again Mark!
Customer in Cardiff Posted on 29/01/2026 , work completed 29/01/2026
Updating Flat electrics Cardiff
Customer Service
Quality
Value
Finding a good, reasonably priced electrician is a nightmare. Williams Electrical was a wonderful find. Mark visited to assess the work, he gave me a time and materials guide price and followed it up with a written estimate promptly. We agreed on a time to do the works and he communicated well when he had to make a small rearrangement to the timing. He was personally charming and someone one feels happy to have in your property. The work was done as described and in good spirit on time. He is tidy in his work and disrupted me as little as possible. The work was completed, and an invoice itemising materials and labour costs in detail was issued to me within 24 hours. He forwarded the electrical certificate and Building control notice immediately. It felt like a very professional service all round, and he is a pleasure to have around. I have no reservations in recommending him, and he will undertake other works for me. The first tranche of work inc new updated consumer unit (fuse box), adding plug outlets, and earthing to gas and water supplies. His pricing is sensible and good value.
Customer in Caerdydd Posted on 29/01/2026 , work completed 22/01/2026
Fire Alarms fitted efficiently and quickly
Customer Service
Quality
Value
This is the second time Mark has done work for us. This time he sourced and installed new fire alarms throughout the house. He was punctual, efficient and the price was very fair. I would highly recommend him to others- he's a thoroughly nice man, very straightforward to deal with and completely reliable.
Customer in Cardiff Posted on 08/01/2026 , work completed 08/01/2026
Reliable & Courteous Electrician
Customer Service
Quality
Value
Mark did electrical work at both my house and my mum’s house. This is the second time I have used Mark for electrical work. He is reliable and polite and completes the work in a timely manner. He provides advice on best lighting / solutions. He purchased the lighting fitments on my behalf (saving me time & effort working out the best option). Reasonably priced. I would recommend Mark and will use him again in the future.
Customer in Cardiff Posted on 02/11/2025 , work completed 22/10/2025
Great work.
Customer Service
Quality
Value
I recently contacted Mark for the first time to remove two ceiling lights and install two new ones. He arrived on time on the day agreed. He worked quietly and efficiently to do the work. A problem was detected with an existing dimmer switch for one of the new lights. Luckily I had a replacement light switch in the house , which Mark was able to install with no problems. All the work was completed and I am very happy with work. I would have no hesitation in using Mark for any other electrical work.
Customer in Caerdydd Posted on 30/10/2025 , work completed 27/10/2025
Precise & Professional
Customer Service
Quality
Value
Mark was able to fit a new socket and change another with very short notice. All options and steps were described to us and the work was carried out to a high standard and with no mess.
Customer in Cardiff Posted on 21/10/2025 , work completed 13/10/2025
Works quietly and diligently and solves problems
Customer Service
Quality
Value
We have used Mark before as Electrician of choice. On this occasion we needed some sockets repositioned, some sockets installed where there were no existing sockets, and electrical leads resting on top of the kitchen cabinets needed to be tidied up. In addition, we needed Mark to track down why one particular electrical circuit which powered the garage, tripped on an infrequent basis. This was a particularly difficult task because at times the circuit would trip, meaning there was no way to access the garage. If only the garage had an entrance from the house, or from the garden we would have been able to get into the garage. In the end, Mark dismantled some of the overhead door and was able to detach the garage door motor to enable the door to be opened manually. Once inside the garage, Mark was able to rectify the problem. Mark can be relied upon to work quietly and diligently, and keeps the customer advised throughout.
Customer in Cardiff Posted on 09/10/2025 , work completed 08/10/2025
Excellent and professional
Customer Service
Quality
Value
We had no electricity in our kitchen, especially fridge and freezer , and in our dinning room. Mark found out the problem and managed to fix everything. It was not easy as we live in an old house. Mark was very patient, explained what he was doing and job done. 👍 We are very grateful and pleased with his service. We will definitely call him again , and definitely recommend him to everyone that we know.
Customer in Cardiff Posted on 01/10/2025 , work completed 30/09/2025