Don't Brooks Brothers do a complete range of black-tie outfits and accessories(including pumps)? I know my father needed a tux for a cruise a few years back, Think he just went to the local Marks & Spencer for it, as he didn't want to spend too much on something that was only going to get used for a couple of weeks.
Yes, but there are not many other options. And what is on offer at BB does not always adhere to the purists' rules (flap pockets, etc.). I just recall that when you make a list of the details that you want in proper formal attire, you realize that it is not all that easy to find, at least in the US. I haven't looked in the UK, but I would not be surprised if M&S got closer to the mark.
So I still think that a black tie thread is a good idea. Maybe this is already it. Clearly, there is much to discuss. I appreciate the comments, gentlemen.