Don Pearce wrote:
Brimar are producing valves again in the UK, using mostly the original
machines. They make very high quality EL84s.
https://brimaruk.com/valves/
** According to the link, " Brimar Thermionic Products " are NOT producing any valves in the UK at all.
Rather, they import valves and sell from China and Russia like other firms have been doing for decades.
The site alludes to a pious hope that one day they MAY be make some types themselves.
..... Phil