Due to money constraints I've decided to replace the discs with Mtech. They have some really good reviews and some really bad reviews a bit like the local Indian restaurant.
Hoping to fit some refurbished calipers and upgrading the brake lines. I need to find someone to fit them though. The local Jag 'specialist' doesn't seem too keen on doing anything other than standard servicing. Apparently even welding as it's too labour intensive. Live in hope.