Hi Gareth,
You are correct that the part was discontinued in 2014. I have tried numerous VAG breakers over the past 2 months and they don't have the part. Even done the plastic wield route but because the break is so close to the elbow it wasn't successful. But there some hope in that someone has suggested that a try a German website called Audi Traditions as they may have it. I will let you know if they can pull it out the bag.
D