it was quite hard to find, but i got it from 'VW van parts direct' £238
from catcar info i got the part number 7E2419751B,
this is the link to the part i bought
Van Parts Direct VW Transporter 2010 - 2019 Intermediate Steering Shaft ( Item In Yellow )- Genuine VW Commercial Parts
part number was 7E2419751C, looked identical to the part i took off.
only thing to note is it didn't come with the bottom oetiker 51.5mm clamp for the boot, but i managed to get one from ebay for a couple of quid.