I had a head unit fitted by Halfords, should have taken about an hour, took nearly three! And then the bloke fitting it totally bodged the installation. When I finally bought a DAB unit around six or seven years ago I found a place in Westbury who could do it reasonably cheaply, although I bought the unit, a Kenwood, from Halfords, because they were in town and a good price. The bloke there asked who the hell had put it in, so I told him. ‘Figures’ he said with a heavy sigh and the whole rolley-eye thing.
For quickness I had the windscreen antenna fitted, because I was going on holiday and they didn’t have any external ones to hand, and stuck with it for a while, but then I had a magnetic one fitted, which is superb, there are very few places where the signal drops out. Not cheap, about £40 including fitting, but very well worth it to get the best from a car DAB.