Code R brake lever - where to buy?

[simonk]

Managed to shear one of the little square reach adjustment knobs off a lever. I’m struggling to find somewhere in the UK that sells the lever only, so before I take my chances with BikeInn, does anyone know of a UK based supplier please? Or a worthy 3rd party lever replacement/upgrade? I’m happy with the Code’s so don’t feel the need to replace the lot.