Believe it or not but I actually got Halfords to install some on an EK I had a few years back, done a right tidy job in fairness, all wires hidden etc
I don't know if the same detail would be put in to it in all Halfords tho, I think I had to pay €35 or something cause I didn't buy them there. It's free installation if you buy them on the day
Also have to book in advance too.
Be worth looking into if your stuck