UKAS ISO 17025 accredited Pendulum testing across Derry/Londonderry — to BS 7976 and HSE standards. Reports your insurer, HSE inspector and court will recognise. We don't sell flooring, coatings or anti-slip products.
Derry/Londonderry — Northern Ireland's second city — combines a UNESCO-aspirant walled city centre with substantial public-sector employment at Altnagelvin Hospital, the Magee campus of Ulster University, and the Foyleside shopping centre. The walled-city heritage means many surfaces here are listed, requiring slip-testing approaches that respect conservation constraints — particularly around the city walls and the Guildhall precinct.
Under the Health and Safety at Work Act 1974 and the Workplace (Health, Safety and Welfare) Regulations 1992, every duty holder in Derry/Londonderry — from a single shop owner to a national retail estate — has a legal obligation to assess and manage slip risk. A UKAS-accredited Pendulum Test Value (PTV) report is the strongest documented evidence available, and it carries the same weight in Derry/Londonderry as it does anywhere else in the UK.
Surface Performance Ltd, trading as Test-Slip, has UKAS ISO/IEC 17025 accreditation — the highest level of laboratory accreditation in the UK. We don't sell flooring, coatings, mats or anti-slip retrofits. The only thing we sell is the test, the report, and the qualified opinion behind both — so the result you get is the result the floor produced, not the result that suits a sales pipeline.
Derry/Londonderry's economy generates slip-risk environments that vary by sector. Each one requires a slightly different testing approach, and our engineers in Derry/Londonderry, the North West and the A6 corridor are familiar with the operational realities of each.
Healthcare at Altnagelvin Area Hospital and the Western Trust.
Retail at Foyleside, Quayside Shopping Centre and the Diamond.
Education at the Magee campus of Ulster University.
Beyond these focal areas, we test floors across hospitality, healthcare, education, transport, public-sector buildings and food production right across the city walls, the Diamond, Foyleside, Magee and the Guildhall — and the wider Northern Ireland region.
Every Pendulum slip test in Derry/Londonderry produces a Pendulum Test Value (PTV) figure. The HSE classifies floors against this value — a single accredited test gives you the evidence to demonstrate which zone your floor sits in.
Fill in the form and we'll come back with a clear scope, timeline and fixed fee — usually within 24 hours.