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M & J Cullen Electrical Contractors

10/10

Blackwood, Gwent

Checkatrade member since December 2019
5

Services

  • Electrical Contractors
  • Fault Finding
  • Fuseboard / Consumer Unit Installation
  • House Rewiring
  • LED Lighting
  • Smoke Alarms

Customer Reviews

Write a review

10 /10

Based on 24 reviews over the past 12 months

Quality of work

10

Reliability

10

Communication

10

Reviews (143)

  • 10

    Would recommend - knowledgeable and can do the job

    Posted 25 January

    Very quick response when I put the message out. Martin & co were reliable, showed up on time for all appointments, very knowledgeable and experienced and explained everything clearly to me. They quoted me for the job and the pricing was clear from the outset. There were no hidden costs added on along the way. They rewired the house and finished in 5 days.
    Verified reviewer
    Job location: NP20
  • 10

    Full rewire of 3 bedroom property

    Posted 23 January

    martin and callum carried out a full rewire of our property to an exceptional standard. Everything was explained in detail prior to starting and throughout they really are true professionals in what they do and their attention to detail is exceptional. They are both polite, courteous, arrive on time and their attention to detail and cleanliness is second to none. Absolutely outstanding company we would highly recommend.
    Verified reviewer
    Job location: CF81
  • 10

    Full rewire

    Posted 12 January

    M&J Cullen carried out a full rewire of a property I inherited which was in a poor condition. They turned up when they said they would, were able to start quickly and completed the work in the timeframe they said. A rewire is not a cheap job but when i met Martin and from reading other reviews, I had some confidence that the job would be done properly and it was.
    Verified reviewer
    Job location: CF40
  • 10

    Consumer unit replacement

    Posted 18 December 2025

    Called for an estimate to replace consumer unit and outside lights. Arrived promptly and did a comprehensive quote. Work was carried out as per quote efficiently and to a high standard. They were very polite and professional offered good practical advice and left everywhere clean and tidy. Highly recommend them for any domestic electrical work.
    Verified reviewer
    Job location: CF23
  • Nick L
    10

    Full rewiring

    Posted 09 December 2025

    Excellent service. Completed the rewire at short noice in time with other planned work on a tight deadline. Accommodated everything needed in the house after moving in to discover faults and dangerous wiring. The service was smooth, fast, clean and quality. Very reliable, prompt and friendly. With several projects ongoing at once, they were excellent with working around other priorities and supported the install of a new kitchen at the same time. Brilliant work, great people. Nobody wants to have a house wired from top to bottom, but they made the process much easier.
    Verified reviewer
    Job location: NP12
  • Andrew M
    10

    Fantastic job well done

    Posted 05 December 2025

    After moving into an old terrace house and finding a wide range of DIY disaster's, the upstairs lights finally gave in. M&J contractors came to the rescue and completed a full house re-wire removing the 50 year old cables and replacing them with new. Excellent work and brilliant customer relations. Will be using again in the future 10/10
    Verified reviewer
    Job location: NP12

Photos

Company Info

Owner

Mr Martin Cullen

Partnership

7 years on Checkatrade

VAT Registered

No

Domestic Work

We are NICEIC Registered Electricians specializing in House Rewires.


We have been established for over 30 years, providing a professional quality service to local authorities and the private sector.


Rewires-Rewires-Rewires and electrical upgrades.


We also provide all building services that can transform inhabitable, run down properties into homes you can be proud of.


Providing a guaranteed electrical service to provide all electrical requirements including:

  • Electrical Rewires, Electrical upgrades including fuse board/consumer unit upgrades and changes
  • Install & Replacement Internal & External Lighting and Internal & External power points.
  • Building work to include:
  • Bathroom & Kitchen upgrades & Refurbishments

Total Property refurbishments, including all building work in run down properties, transforming inhabitable homes into homes you can be proud of.


We provide a friendly, high-quality service at all times, and take Pride in every job we do


All estimates are free and without any obligation


No job is too Big or too Small.


For a Professional Guaranteed service give M & J Cullen a call

Accreditations and awards

CHAS
CHAS
Constructionline
Constructionline
EAL Qualified
EAL Qualified

This trade passed up to 12 Checkatrade vetting checks

Member since December 2019

Individual checks

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  • Proof of address

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  • Qualifications and accreditations

  • County court judgement

  • Open source media

Business checks

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  • Company trading history

  • Company duplication

  • County court judgement

  • Enhanced business check

  • Director checks

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