Just looked back at your post and see that you got your led rears from Eurocarparts! Do you have the part no you used and do you know if it will fit mine (55 plate)?
I just chose lights for a 2010 model
Sportback from them as I knew they'd be the later LED ones.
Interestingly , the box is marked 2008 Model Year so I had a bit of a panic when I went to pick them up but I needn't have worried as they were the correct LED type.
I went for the Magneti Marelli ones and have to say that they're indistinguishable from Genuine.
They were made in Poland and are actually marked Automotive Lighting, the same brand as the Genuine Audi Xenon headlamps I retrofitted a few weeks ago (and the same as the halogen lights I removed, for that matter).
With one of the many discount codes circulating it's possible to get them for a good price, the inners cost £29 and the outers £46 each.
You'll need an adapter cable or just modify your existing wiring and of course VCDS to change the coding.
They'll definitely fit any Sportback, mine is a 56 plate and fit is perfect.
Don't forget that with VCDS you can code the car to have the fog light function as a brake light as well, which helps update the car IMHO.