Pendulum testing
across Middlesex (historic).

Why Middlesex (historic) needs real PTV data.

Middlesex (historic)'s logistics and distribution footprint means coated concrete floors, loading bays and dock levellers see constant use. Power-floated concrete can look flawless and still fail wet PTV testing — a problem that only surfaces when a worker slips or an insurer asks for the report.

Heathrow-adjacent distribution estate, mixed with dense outer-London retail and hospitality.

Pendulum testing. Not opinion.

The pendulum method — defined in BS 7976 and BS EN 16165, and referenced throughout HSE guidance — is the only test HSE considers reliable on wet or contaminated floors. A rubber slider swings from a fixed height and drags across the test surface for exactly 127mm; energy lost to friction is recorded as a Pendulum Test Value (PTV) on a scale of 0 to 150.

HSE classifies any PTV below 25 as a high slip potential. 25–35 is moderate. A PTV of 36 or above, measured wet and dry with the correct reference slider, is the benchmark for a floor considered safe under normal use. Every report we produce in Middlesex (historic) is issued under our UKAS ISO/IEC 17025 accreditation (Lab 7933) — the method, the technician and the equipment are all independently audited.