Two of 078198025. Its used on loads of models so should be readily available from the usual suspects - Elring, Reinz, Febi, etc.
The brake fluid change is non-trivial on a D2 because of the ESP system. You have to cycle the ABS pump (with VCDS) in order to get it to flush properly and you absolutely must not let the master cylinder run dry otherwise all manner of pain ensues. You need a pressure bleeding system which can run at 2 bar to push the fluid through such as the Sealey VS820:
A vacuum bleeding tool will not work as it can't pull the fluid through.
If the garage has one of these tools and an OBDII diagnostic machine then they should be able to do it. If not, I'd be inclined to wait until you can get over to Devon. The fluid is not in good condition, but I doubt a couple more months will be an issue.