Thanks for the comments guys.
In answer to some of the questions:
The camera is a Canon 350D. I took those pictures with a Tamron 24-75mm, f/2.8 XR Di lens, with a polarised filter.
The aerial I picked up off eBay, however what you probably can't see in the pics, is that it doesn't taper to the same diameter where it meets the antenna base on the car, so there is a bit of overlap. It does for now, but I want to replace it (maybe with the RH stubby, but I find that a bit too short, or I've heard that the one from a Nissan X-Trail or suchlike fits properly, and is about the same length as the one I have already).
The black grilles are standard M - however they did originally have chrome surrounds. I popped the grilles out of the nose though, and then detached the surround (it just clips over the fin-section), rubbed it down with 1200 wet&dry, and then applied a satin black paint to them. It matches the finish on the fins perfectly, and cost about £4.
