The Lucas 7" headlamp trim rims with screw-clamp fixing have always appealed to me.  Partly because the attachment is secure and visible and partly because they're uncommon.  They were never fitted as standard to sidescreen TRs as far as I know, although I've seen them on some cars (including one former works car, @iain).   I got a set a few years ago from one of our correspondents here -- thanks @foster461-- and I had them rechromed a while ago as I was having some other stuff done.  I'm c