My pair was made 8/20 according to the signed booklet that came with it as part of of the groovy prestige package. Nice touch for sure...corny, but I like it! And, according to what info I can gather, were made in Scotland
Part of the story goes that Tannoy made all the pairs of Prestige, Heritage and Definition lines they could in Coatbridge before those Scotland doors were shut. That's what there is for sale now. In the future, those three lines will be made in Poland at the same factory where the cabinets have been made for several years once the factory there is up and running. The other Tannoy lines are and will continue to be made in China.
I'm told by someone I trust that they can arrive "tight as a drum" and start to loosen up at 100 hours with full break in around 300. That's a lot of hours on my getting rarer preamp tubes in the old Leben CS600, but in for a penny, in for a pound. Patience is often more of a virgin than a virtue around here, but I'll put in the time and report back. Fingers crossed once more unto the breach.