National Physical Laboratory

The National Physical Laboratory has operated for more than 125 years. Each year, 75,500 UK businesses demonstrate traceability to UK standards through calibrations originating at the NMS laboratories.

It is 10 minutes' walk from Teddington rail station.

The National Physical Laboratory (NPL) is the national measurement standards laboratory of the United Kingdom. It sets and maintains physical standards for British industry. Wikipedia, CC BY-SA.