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About Office Leak Detection
Office Leak Detection, a specialist service from ADI Leak Detection. The people who answer the phone, the engineers who turn up and the company on the invoice are all ADI.
Who ADI is
ADI Leak Detection was started in 2011 by its founder, Adrian, as a specialist leak detection company at a time when most leaks were still found by opening things up. He was an early adopter of non-invasive methods and built the business from a local service into a national one. After Adrian died, ADI Leak Solutions Ltd was formed to carry the company on under the same name and the same principles. It is led today by managing director Monique Dray, who has been with the company for more than ten years.
Today ADI runs more than twenty-five leak investigation engineers across England, Scotland and Wales, supported by an office team in High Wycombe that handles booking, scheduling, reports and customer questions. ADI states that its engineers are all qualified and registered plumbers; it does not offer general plumbing, and it does not repair roofs or building fabric.
ADI's own website carries more than a thousand five-star reviews on Trustpilot; the independent profile showed a TrustScore of 4.7 from 1600+ reviews when we checked on 14 September 2026.
Why office buildings get their own name
An office is not a big house. Its pipes are hidden above ceiling grids and inside risers, its washrooms are stacked floor on floor, the roof is covered in plant, and there may be three other tenants on the same water supply. The questions a building or facilities manager asks are different from a homeowner's: who signs the engineer in, which floors lose water during the test, will the landlord or the insurer accept the report, can you do our other buildings.
Office Leak Detection exists to answer those questions properly, in one place. ADI uses the same approach for other kinds of building it works in regularly. The service, the engineers and the terms are ADI's throughout.
Accreditations, insurance and coverage
The credentials an insurer, a landlord or a facilities team usually asks about, as ADI publishes them.
- CIPHE
- Accredited by the Chartered Institute of Plumbing and Heating Engineering. ADI describes itself as one of the only CIPHE-accredited water leak detection specialists in the UK.
- WIAPS
- Registered with the Water Industry Approved Plumbers Scheme, so plumbing work complies with the Water Fittings Regulations.
- WaterSafe
- A WaterSafe-accredited contractor, on the national register of approved plumbing businesses.
- SPATA
- An approved contractor of the Swimming Pool and Allied Trades Association.
- CSCS
- Engineers hold Construction Skills Certification Scheme cards for work on construction sites.
- Insurance
- £5 million public liability insurance. A risk assessment and method statement are supplied before commercial work starts.
- Coverage
- England, Scotland and Wales, from engineers based across the regions. Call with the postcode for availability.
- Office hours
- Monday to Friday, 7:30am to 6:30pm. Calls to the office are recorded for quality and training.
Every job starts with a phone call
The office team asks about the building, the symptoms and the access, works out which kind of investigation fits, quotes it, and books the engineer. They stay in the loop through the visit and send the report afterwards. If your landlord, managing agent, insurer or a contractor has a question about the findings, they are the people to ring.
Call 0333 567 2624
On Trustpilot
Read the full review“He was able to locate the leak and provided a detailed report that could be shared with my insurer.”
Read the full review“He quickly set up the equipment, carried out a tracer gas test and pinpointed the leak to an area just outside our garage underneath the driveway.”
Call ADI about a leak in your office
Describe what you have noticed, the type of building and the postcode. The office team will talk through the survey, give you a quote and current availability, and book the engineer.
- Monday to Friday, 7:30am to 6:30pm
- Calls reach ADI Leak Detection's office in High Wycombe. Engineers cover England, Scotland and Wales.