Through my trade contacts I can offer Performance Friction brake pads.
These are PF01’s rated as a race pad, equivalent to the Pagid RS14, however I have used them on the road as well and they are great.
I have found they give a more progressive feel and are not subject to the crumbling and increased rate of wear when getting low compared to other popular choices for the Lotus.
Prices are
2 piston caliper - 84.68 +vat
4 piston caliper - �93.24 +vat
1 piston caliper is a PF97 compound - �96.57 +vat