Fully qualified engineers, on your doorstep within minutes.
Radlett sits just minutes from our Borehamwood depot, so engineers can usually be with you the same day. We use thermal imaging, acoustic surveys, and tracer gas to find the exact source of a leak before any floor or wall is touched.
A water leak isn’t always obvious and may present itself as a rising water bill, a damp patch that won’t dry out, or a shower slowly losing pressure.
Rather than break into walls or floors to search, we bring thermal imaging, acoustic listening equipment, and tracer gas to pinpoint the source first. Once we know exactly where the leak is, we’ll explain what we’ve found, advise on repair, and put together insurance documentation if you need it.
EXCELLENT Based on 67 reviews Posted on Google Mohammad Fazal (John)Trustindex verifies that the original source of the review is Google. Professional A Team These guys are brilliant, honest and do what they say. Not Just that, they also go extra mile. I highly recommend these guys
Owner's reply
Hi Mohammad , We really appreciate your feedback. And we’re delighted you’re happy with the service provided.Posted on Google M NTrustindex verifies that the original source of the review is Google. Never in my life have I come across a company this professional 👌🏻They explained everything clearly from the start and found and fixed the leak under my shower tray without breaking a single tile. They even put the shower tray and screen back perfectly like nothing had ever happened. Another company quoted me more than double the price, but these guys charged £727 and did an amazing job. Both engineers were amazing.Definitely the best around. Highly recommend.
Owner's reply
Hi Mr Maxwell, Thank you so much for your kind review. We really appreciate you taking the time to leave us your feedback. Our clients always come first,and we’re glad to hear you were happy with the service.Posted on Google A PTrustindex verifies that the original source of the review is Google. James arrived promptly on time. Extremely professional, quick and efficient. I have no hesitation in highly recommending Geldon and James. I will definitely contact them when I update my radiators later in the year. Thank you for an excellent service from start to finish.
Owner's reply
Hi Alison, Thank you so much for taking time to leave such wonderful feedback. We’re delighted to hear that James & Geldon provided a prompt, professional and efficient service and we will make sure your review its forwarded to our engineers 🙏🏻Posted on Google Angie GTrustindex verifies that the original source of the review is Google. Chris V was very helpful, and polite, turned up on time, did a thorough investigation to find out a damp patch on the carpet wasn't a pipe leak which was reassuring.
Owner's reply
Thank you so much for your kind review, We’re delighted to hear Chriss provided a thorough and reassuring service. We really appreciate your feedback and are always here if you need us again.Posted on Google Charlie YTrustindex verifies that the original source of the review is Google. Jim, spent a lot of time finding the issue and double checking no other sources, doing numerous tests I have seen no other plumber do. Giving advice with a friendly smile, leaving with a happy customer. Thanks again
Owner's reply
Thank you for the wonderful review,Charlie! We’ll be sure to pass your kind words on to Jim. We really appreciate we could provide through the service you deserved.Posted on Google Andreea IonelaTrustindex verifies that the original source of the review is Google. Great work, highly recommended! 💯 Thank you so much!
Owner's reply
Hi Andreea, Thank you for your kind words! We’re delighted you had a great experience.Posted on Google Betty CawelyTrustindex verifies that the original source of the review is Google. Aleks from PrimeFix found my leak in an area I would never have expected. It took some time and wasn’t a cheap job, but it was a very difficult leak to find. He worked carefully and managed to locate it with minimal damage. Big thanks to Aleks and the PrimeFix team for their hard work and professionalism. Highly recommended.
Owner's reply
Hi Betty , Thank you for your kind words and recommendation. We’re glad Aleks was able to find the leak and keep the exposure damaged to minimum. We really appreciate your supportPosted on Google ray fahtiTrustindex verifies that the original source of the review is Google.
Owner's reply
Hi Ray , Thank you for the feedbackPosted on Google Matt ConroyTrustindex verifies that the original source of the review is Google. Excellent work with promised support if needed after plumbing in our wunder underfloor heating. Would reccomend 👍🏼
Owner's reply
Hi Matt , Thank you and we really appreciate the feedback. Gland we would help and of course we’re always here if you need any further support in the future 🙏🏻Posted on Google Kirsty BrownTrustindex verifies that the original source of the review is Google. ⭐️⭐️⭐️⭐️⭐️ We had an underground leak at my 88-year-old mother’s property and contacted Prime Fix Group Ltd. The engineer arrived promptly and, after carrying out an assessment, called me directly to explain the issue, the required work, and all costs involved, as he did not want to stress my mother with the situation. Very professional service from start to finish with no hidden fees at all. Everything was explained clearly before any work was carried out. We submitted the report to our insurance company, who recognised Prime Fix as highly qualified engineers. Highly recommended.
Owner's reply
Hi Mr Brown, Thank you for your kind words and recommendation. We’re glad we could help and make the process as stress-free as possible for your mother






You’ll receive a written quote before any work begins. No call-out fee, no parking charges, no surprises on the invoice.
Every job is backed by our 18-month workmanship guarantee.
We follow the same disciplined process on every job, working from broad checks down to a precise fix on the leak.
Nothing gets opened up until we’re certain we’ve found it. Here’s the kit we use to get there.

A boiler or heating system that keeps losing pressure, with no obvious fault, is often the first sign something's wrong. We isolate the circuit, bring it up to a controlled test pressure, and narrow the fault area down, usually inside an hour.

A leak moving behind a wall or under a floor shifts the surface temperature just enough for an infrared camera to catch it. Nothing gets lifted or opened. The camera does the first pass so we don't have to.

Recurring stains, a soft patch underfoot, a ceiling mark with no roof leak in sight: moisture readings show us how far the water's travelled and which direction to search.

Water escaping under pressure gives off a distinct sound. Ground mics and pipe-correlation kit can detect it even underground or sealed behind finished walls.

When nothing else reveals the leak, we introduce a safe hydrogen-nitrogen mix into the system and track it with sensitive detectors until we reach the exact escape point. It's the most precise method we have, kept for the toughest cases.
Every quote is confirmed in writing before work starts. No call-out fee. No hidden charges.
Discounted rates for landlords, HMOs, and managing agents with multiple properties. Dedicated account manager included.
No hidden extras: no parking, fuel, ULEZ, or Congestion Charge surcharges. Materials at trade cost plus 30% markup, fully itemised on the invoice.
Account-client portfolios receive discounted rates from the published prices.
Fully qualified engineers, on your doorstep within minutes.
PrimeFix is headquartered on Thirsk Road, Borehamwood, WD6, a short drive from Radlett.
That means no waiting on an engineer to cross London. When you call, we’re already close by.
Whether you’re near Radlett High Street, Newberries Avenue, or out towards Aldenham, you’ll get faster arrivals, the same accredited, non-invasive detection methods (acoustic, thermal, tracer gas) we use everywhere, and the same 18-month workmanship guarantee.
On call around the clock in Borehamwood for leak detection, plumbing, heating, electrical, and drainage emergencies.
On call around the clock for emergencies. For planned work and quotes, we typically respond within the hour during business hours.
0208 108 0400
0757 700 2864
info@primefixgroup.uk
Monday to Friday 8am to 6pm | Emergency Line 24/7
Leave your details and a PrimeFix engineer will be in touch within 60 minutes.
Answers to the questions Radlett customers ask most. Can't find yours? Call 020 8108 0400 and we'll walk you through it.
Pricing is hourly: £85 +VAT for the first hour, then £42.50 +VAT for each half hour after. You’ll always get a confirmed price before work starts, and there’s no call-out fee. Parking, ULEZ, congestion charge, and fuel surcharges never appear on the bill.
Most surveys are done within one to two hours, depending on the property and how the pipework’s laid out. We’ll give you a realistic time estimate when you book, not once we’ve arrived.
Rarely. Thermal imaging, acoustic tracing, moisture mapping, and tracer gas usually pinpoint the leak before any opening-up is even discussed. Most jobs are completed without disturbing a single tile.
Yes, on every job. You’ll receive a full digital report covering the leak’s location, the detection methods used, and our conclusions, in the format major UK insurers expect for trace and access claims.
Both options are available. We operate a 24/7 emergency line, 365 days a year, with no out-of-hours surcharge. For non-urgent leaks, we’re happy to schedule around you.
Every engineer holds NVQ Level 2/3 qualifications, Gas Safe registration, and NICEIC approval where the work requires it. PrimeFix is CHAS accredited and SafeContractor approved.




















From emergency leak detection to full plumbing rebuilds: one trusted team, covering Greater London and the Home Counties.


Non-destructive water and gas leak detection using thermal imaging, acoustic equipment and tracer gas — with insurer-accepted reports.
Emergency and planned plumbing for homes and commercial properties/ From burst pipes and leaking fixtures to full system upgrades, 24/7.
Emergency and planned plumbing for residential & commercial properties. CCTV surveys, jetting, and emergency drain unblocking
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