Here’s a list of some leading national suppliers of pinch solenoid valves in the United Kingdom:

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Leading Suppliers of Pinch Solenoid Valves in the UK

1. Hawker Controls Ltd

   • Website: hawkercontrols.com

2. Parker Hannifin

   • Website: parker.com

3. Spooner Industries Ltd

   • Website: spooner.uk.com

4. Proportion-Air

   • Website: proportionair.com

5. Aignep UK

   • Website: aignep.uk

6. Festo Ltd

   • Website: festo.com

7. Bürkert Fluid Control Systems

   • Website: burkert.com

8. Pneumatic Components Ltd

   • Website: pneumatic-components.co.uk

9. Camozzi Automation Ltd

   • Website: camozzi.co.uk

10. Innovative Control Systems Ltd

    • Website: innovativecontrolsystems.com ```

These companies are known in the field of fluid control and automation and may supply pinch solenoid valves, among other products. For the most current product offerings and availability, it's recommended to visit their websites or contact them directly.