UKAS accredited laboratories are subject to ongoing periodic technical assessments and quality audits undertaken by independent experts in the relevant calibration field(s). The UKAS mark indicates the laboratory is legally recognised by the DTI as providing the highest quality calibrations in the fields for which it holds accreditation.

What's the difference between ISO9000 and UKAS calibration laboratories?
ISO9000 registration merely indicates their company quality system conforms to ISO9000 requirements. ISO9000 accreditation has no bearing on the technical quality of calibration work and in itself is no guarantee the calibrations themselves conform to your own ISO9000 requirements.

Are UKAS calibration certificates recognised overseas?
UKAS calibration certificates are internationally recognised through multilateral agreements of which UKAS is a signatory. UKAS has also recently received recognition in the USA by the FAA (Federal Aviation Administration) FDA (Federal Drugs Administration) and NVLAP (National Voluntary Laboratory Accreditation Program)