Filters, alkali in United Kingdom
- Allpure Filters Ltd
- Mix UK Ltd
- Carlson Ltd
- Northumbria Optical Coatings Ltd
- Mix & Batch 2000 Ltd
- Pisces Engineering
- Amazon Filters Ltd
- Sttop Filters Ltd
- Domnick Hunter Group Limited Parker Hannifin Ltd
- Leyland Filtration Co. Ltd
- Parker Hannifin UK Ltd (Filter Division Europe)
- Prosep Filter Systems
- B L T Circuit Services Ltd
- C M I Trading UK Ltd
- Visualux Ltd
- Lift Hold & Separate Ltd
- Ryedale Brakes Malton
- A J M Polyfilters
- Fairey Industrial Ceramics
- Flogard Systems Ltd
- S P X UK Ltd
- Sintamesh Ltd
- Quantum Air Technology
- Birch Sales & Marketing Ltd
- Filter Plus Ltd (Filter Plus Ltd)

Machinery and equipment