Critical Flow Systems Limited

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Experts in

the Measurement of Liquid Flows

& Installing, Designing and Supplying Flow Measurement Systems.

who arecritical flow

Critical Flow Systems Limited is a certified MCERTS inspection company, conducting inspections of flow measurement systems for water utility and non-water utility companies throughout the UK.

what do we do

With extensive experience throughout our team of inspectors, we can help you to improve your flow measurement systems. We offer full installation, design, maintenance, equipment calibration, repair and training services..

why choose us

With the largest team of full time, qualified inspectors in the country, you can be assured that your MCERTS Inspection will be scheduled promptly and conducted to the highest standards of quality, using UKAS calibrated equipment.


Flow4 Storm Event Monitoring.
Meeting Environment Agency regulations.


company news

Delivering quality inspections.
Our growing team of engineers.


New products

Product Gauging.
Standardised kits now available.