Electronika Ltd

Excellent service from start to finish. Had my new EV charger fitted in Sidcup and couldn't be happier with the installation. The engineer arrived on time, was professional throughout, explained everything clearly, and left everything clean and tidy when the job was complete. The charger looks great and is working perfectly. Would highly recommend to anyone looking for an EV charger installation.

Marcin has been very helpful through out the process of installing my electrical. I am new to this and at every corner of the process he has been able to give advice. Always willing to go a step further if I needed more help. Electronika Ltd is a business I would come back to over and over again, as they understand how to make a customer satisfied, going above and beyond. Marcin is honest I recommend him if want work done to a high standard. Thank you very much.

Marcin did a full rewire at my house. He was incredibly professional and the work was done to a really high standard

Extremely pleased with the work done by Marcin at Electronica in updating our fuse box. He was able to do the work quickly and his fees were very competitive. He’s highly professional. Will definitely use his services again in future.

I have used Marcin and team for 3 or 4 jobs including an extension and garden room wiring and they did a great, professional job each time, including coming back when I had queries. Would recommend

Installation of two socket outlets and replacement of existing RCD from Type AC to Type A was done professionally and in time. Thank you for great job!

Marcin and his team are great, highly recommended!

Marcin abd his team, installed the electrics in our external office including new lighti ng, distribution board, external power etc. Service was excellent with clear communications and no delays or hidden costs plus flexibility.

I've used Electronica Ltd numerous times, Marcin is very reliable and and very thorough. I'd certainly recommend this business for any electrical issues.

We recently used Electronika Ltd for a full house rewiring and consumer unit upgrade at our home in Sidcup (DA15) and couldn’t be happier with the service. Marcin and his team were professional, reliable and very tidy throughout the job. They also installed our EV charger, upgraded the fuseboard and carried out full testing and certification. Everything was explained clearly and completed to a very high standard. We now feel confident that our electrics are safe and fully compliant. If you’re looking for a trustworthy electrician in Sidcup, I highly recommend Electronika Ltd.

Marcin and his team have completed both big new wiring projects at the house in Sidcup, following an extension build and also smaller but urgent repairs. The work is first class and the customer service and charges excellent.

We had a new extension built and Marcin and his team at Electronika Ltd completed all the electrical wiring for the new kitchen and dining area. Before starting any work, Marcin noticed some worrying issues with the existing installation and recommended a full inspection and testing. We are very glad we did this, as the house we bought had clearly been worked on by a DIY owner and some parts were not done correctly or safely. It turned out we had missing earth connections to several metal accessories on the first floor, and the upstairs lighting circuits had no earth at all, which was dangerous. Marcin explained everything clearly and provided the right solution. Overall, Electronika Ltd carried out: • Full electrical wiring for the new extension (kitchen & dining room) • Full inspection and testing before work started • Rewire of upstairs lighting circuits • Replacement of the old fuseboard with a modern consumer unit Everything was completed to a very high standard, fully tested and properly certified at the end, with Building Control notified as required. If you need a reliable electrician in Sidcup / Blackfen (DA15), I highly recommend Marcin and Electronika Ltd.

We recently used Electronika Ltd for a full rewire of our 3-bedroom house in Sidcup (DA15), including a new consumer unit and EV charger installation, and the service was excellent from start to finish. Marcin was extremely knowledgeable and explained every stage of the work clearly before starting. The project was well organised, completed efficiently, and finished to a very high standard. Despite the scale of the rewire, the team were professional, polite and kept disruption to a minimum, always leaving the house tidy. The EV charger installation was handled perfectly, with helpful advice on the best setup for our vehicle. All testing and certification were completed promptly at the end of the job. If you’re looking for a reliable electrician in Sidcup or South East London for rewiring, consumer unit upgrades or EV charger installation, I would highly recommend Electronika Ltd. Great workmanship and clear communication throughout.

Marcin and his team at Electronika Ltd recently replaced our old consumer unit and installed an EV charger at our house in Eltham (SE9), and we’re extremely happy with the result. Running the cable for the EV charger was quite challenging due to the layout of the property, but Marcin found a neat, fully compliant solution and explained the options clearly before carrying out the work. His knowledge and advice were excellent throughout the process. The team were polite, tidy and professional, and the work was completed to a very high standard. All testing and certification were provided promptly. I would highly recommend Electronika Ltd to anyone in Sidcup or South East London looking for a reliable electrician, especially for consumer unit upgrades and EV charger installations.

I have worked with Marcin from Electronika Ltd on several projects and can highly recommend him. From the beginning, he proved to be reliable, trustworthy, and well organised. His approach is calm, professional, and easy-going, which made working together straightforward and stress-free. Marcin communicates clearly, keeps to agreed timelines, and pays close attention to detail, ensuring that each project runs smoothly from start to finish. He is proactive, solutions-focused, and always willing to go the extra mile to achieve the best possible result. It was genuinely a pleasure to work with him, and I would not hesitate to recommend Marcin and Elektronika Ltd to anyone looking for a dependable and skilled electrician.

I’ve had the pleasure of working with Marcin and his team at Electronika Ltd, and I couldn't be more impressed! From start to finish, their professionalism, prompt responses, and dedication to getting the job done right were exceptional. They were incredibly supportive throughout the entire process, always ready to answer questions and address any concerns I had. What stood out the most was how quickly they responded to requests, making sure that everything was on track without any delays. The pricing was also very reasonable, especially considering the high-quality service they provide. I truly appreciate how transparent and fair they were throughout our collaboration. If you’re looking for a reliable, professional team to handle your needs, I highly recommend Marcin and the Electronika Ltd team. Their commitment to quality and customer satisfaction is second to none!

Marcin did an excellent job carrying out the PAT testing, connecting the lights, and installing the electric car charger. He was quick to respond, worked efficiently, and the quality of his work was excellent. I’m extremely happy with the service and couldn’t recommend him enough.

We have worked with Marcin and Electronika Ltd on multiple projects across Bromley, Sidcup, Bexley, Greenwich and South East London, including full rewires, extensions and loft conversions. The work is carried out to a good standard, on time and in line with programme. Communication is clear, issues are dealt with quickly and the site is kept tidy. Reliable electrical subcontractor.

We have worked with Marcin and Electronika Ltd for more than five years. Marcin always delivers an exceptional standard on every project and maintains that level from start to finish. He remains reliable and knowledgeable, responds quickly to every enquiry, and keeps communication clear. Any change to the work gets resolved straight away. His team works to the same high standard. They stay polite, prompt and well organised. You receive consistent high quality on every project, while his team supports the schedule, protects the workspace, and finishes tasks without delay. This level of consistency builds trust. I highly recommend Marcin and Electronika Ltd for any electrical work.

Needed Grandma’s kitchen lighting done after a leak from the flat above (12/11/25). Marcin was very professional and explained everything to me (and blindish grandmother) and quoted us at reasonable price also advised us on better lighting solutions throughout the flat. The work was completed in a timely manner and the work area was kept really neat…in my opinion? Marcin/Electronika came as a recommendation from a colleague who had sockets installed by Rafal and new wall light things done by Marcin. Family are extremely pleased with the work done and Marcin is also scheduled for a few small jobs in the leaky flat above. Have never had to call an electrician before, a plumber yes, so for first time experiences I am pleased.

I hired Electronika Ltd to rewire my property, and the service was outstanding. They were punctual, professional, and explained everything clearly. The rewiring was done to a very high standard, with tidy workmanship and minimal disruption. They also offered helpful advice on socket and lighting placement. I’m extremely pleased with the results and would highly recommend them for any electrical work.

Marcin is my 'go to' electrician. Super responsive, punctual, practical and has never let me down. I have known him for six years and can highly recommend him. He completely rewired my flat, installed a EV charging point for my neighbour, fixed dodgy light switches and replaced several downlights in the kitchen. A fantastic electrician! Louise, Wimbledon

Perfect job replacing all our spotlights. Super tidy work and excellent advice on lighting colours.

I have been using Marcin @ Elektronica for numerous years for large project works to carrying out EICR's. Marcin and his team are very professional, reliable and carry out works to a very high standard.

“Reliable, skilled and always a pleasure to work with” We’ve used Marcin and Electronika Ltd on multiple projects — from full rewires and consumer unit upgrades to larger refurbishments and new-build developments. The standard of work is consistently excellent. Marcin is reliable, organised and communicates clearly throughout each job, which makes coordination on site so much easier. His team works efficiently, keeps the site tidy, and always delivers exactly what’s needed, often going the extra mile to solve unexpected problems. As a builder, having an electrician you can fully trust is invaluable. Electronika Ltd is now our first choice on every project. Highly recommended.

Electronica/Marcin has provided excellent service. Prompt, reliable and very thorough. Highly recommended.

Marcin is an amazing electrician. Like a detective in that he gets to the bottom of every problem. His solutions are long-standing and thorough. His team is reliable, punctual and super to work with. The best electrical. Services we’ve had. Thank you.

We’ve used Marcin and his team for several jobs across different properties, and the experience has always been excellent. The work is consistently completed to a high standard, and communication throughout every project has been clear and reliable. Highly recommended.

Excellent, professional service. I have used Electronika Ltd numerous times, and will continue to do so for any future electrical projects. Always a professional service provided in a timely, friendly manner.

I recently had the pleasure of working with Electronika Ltd, and I couldn’t be more impressed with their professionalism and expertise. From start to finish, their approach was thorough, efficient, and highly organized. Their team executed the job with precision and skill, ensuring everything was done to the highest standard. What stood out the most was their friendly and approachable attitude it’s clear that they truly care about their clients and take pride in their work. If you’re looking for a company that delivers top-quality results with a great attitude, look no further than Electronika Ltd. Highly recommended!

I would with all heart advise to stay full away from this company, Marcin comes across like a good person however he has played the classic game in coming in very low and then charging the world to complete the next phase of the work. He felt like he trapped me as didn't even complete the agreed work we initially started. I am now taking matters to the small claims court to get my money back from him. Marcin is a classic greedy builder and please do not trust him on the numbers as he will find many ways to blame other people than himself or even you by saying that was not in the original agreement. Keep everything in writing and avoid anything verbal with him.

Really perfect electricians Turned up exactly on time , done the job perfect , nice polite very clean and tidy , and a better value quote than all the others I had !!! Recommended

Marcin and Rafal were professional, friendly and diligent. Came early and finished several jobs within one day. They also helped us with a few other small bits that were not included in the original quote. Would recommend.

Marcin is a very experienced and professional electrician. He found all the electrical faults in my house and repaired them. He installed the new electrical fuse board and now it works great. I am very satisfied with his service. I highly recommend

Martin and his team were brilliant They were very knowledgeable and honest. Thank you for such efficient service.

Couldn’t recommend more highly - Marcin was quick to reply, friendly to deal with and did all he could to keep it within my budget and limited timeframe but still put in a highly professional service. Will definitely call on him again.

Absolutely exceptional service. I can't recommend Electronika Ltd enough. They turned up at the agreed time and found the problem straight away. Marcin took his time to explain to me in detail every step he was undertaking, whilst ensuring that the work was of the highest order. I'm absolutely delighted with the standard of the finished work.

Good company

Job completed without certification. Been chasing him from last year. Never reply to calls emails text message