If you can hold on a little bit I'll be fitting coilovers to my car soon and you can have my lowering springs with shocks for £40 and I'm not far from you
35 or 40mm drop and pretty comfy to be honest stiff enough in the twisty's. I'm in Weston and will be stripping down all my suspension components in the next couple of weeks or you can pick them up from my work in Portishead