# Sources and method: leakdetectionbirmingham.com leakdetectionbirmingham.com is owned and run by ADI Leak Detection. This file lists where each fact on the site came from and when it was checked, explains how the review and case study files were made, and says what they leave out. ## Sources ### Companies House record for ADI Leak Solutions Ltd - Covers: legal name, company number, incorporation date, registered office and company status - Checked: 13 September 2026 - Link: https://find-and-update.company-information.service.gov.uk/company/15870765 ### Confirmed directly by ADI Leak Detection - Covers: the head office in High Wycombe, the figure of 25 leak investigation engineers nationally, the founding year of 2011, and the Birmingham base at Great Lister Street, Birmingham B7 4DB - Checked: 14 September 2026 ### ADI Leak Detection Birmingham website - Covers: the Birmingham base address and the Birmingham phone number - Checked: 14 September 2026 ### About ADI Leak Detection Birmingham - Covers: the company history, leadership, jobs a year, public liability cover, accreditations, awards, the Trustpilot TrustScore of 4.7 (September 2026), services, prices, No Find No Fee terms, repairs, reports, opening hours and the Severn Trent note - Checked: 14 September 2026 ### adileakdetection.co.uk sitemap and pages - Covers: which case study and engineer profile pages are live, and the company's social media profiles - Checked: 14 September 2026 ### ADI Leak Detection's own job, review and engineer records - Covers: the Trustpilot reviews (as exported from Trustpilot), the case studies and the attending engineers' notes, engineer profiles and coverage, and postcode to county lookups - Checked: 14 September 2026 ## How the files were made - Reviews: 1,523 reviews from ADI Leak Detection's Trustpilot export, imported on 28 April 2026 and covering 11 March 2020 to 27 April 2026. Nothing in the reviews was edited. Engineer names shown with a review: the names come from ADI's own review matching, and one is shown only where the review or ADI's reply names that engineer: by full name, by a first name or short form (such as Phil for Phillip) that no other ADI engineer shares, or by a shared first name together with the surname. A name that is also the reviewer's own first name is ignored, and some reviews that name an engineer were never matched, so they carry no engineer line (632 matches kept, 356 left out). - Case studies: the 221 case studies in ADI Leak Detection's job records that have a write-up live on adileakdetection.co.uk. 28 more are marked as published in the records but no longer have a live page there, so they are left out. Town, postcode, leak type, service, customer type, engineer, detection methods and job date come straight from the records, and county and country were looked up from the postcode. The 2,908 narrative triples (symptoms, causes, repairs, outcomes and the rest) were taken from the attending engineers' notes, or from ADI's write-ups of those notes, and a script checked that the quote supporting each one appears word for word in that job's record before it was published. A few known faults in the records, such as a postcode that belongs to a different town, were corrected or left out. - Engineers: 22 engineer profiles from ADI Leak Detection's records, with case study counts taken from the case studies on this site and review counts taken from the review files. ## Not included - Reviews from Google and other review platforms. - Trustpilot reviews posted after 27 April 2026. - 28 case studies whose pages are no longer live on adileakdetection.co.uk. - In the case studies: customer names, house names and numbers, street names and full postcodes. Reviews show reviewer names as Trustpilot shows them. - Engineers' home addresses. - Job dates for most case studies: ADI's records hold a job date for 1 of the 221. Files generated on 14 September 2026.