Does Campy or that other stuff work with the Maillard/Stronglight/GB vibe you have going? It's true that the English were preternaturally eclectic about outfitting bikes, especially before the "gruppo" era.

If you're leaning to Campy, the Victory line was introduced in 1985 or 1986, I think -- to me that would be the perfect set for a "club racer" bike. The pieces I've seen or own have a finish equal to NR or SR. White brake hoods, and I think that the stuff is reasonable on eBay, compared to NR/SR.

Other choices you might consider, that a lot of mid-80s "English" bikes seem to have on them, are Suntour Cyclone, or Shimano 600 New EX. Like Bob Jacksons. A fair number of these seem to have Sugino Mighty cranksets, rather than the usual Campy NR.