A team in the UK have located and bought the original equipment used by Mullard's Blackburn plant to manufacture vaccuum tubes (thermionic valves). They're now restoring it with the intent of restarting manufacture.Project page: https://brimaruk.com/menugbvp/great-british-valve-project/
Twitter updates: https://twitter.com/BrimarBob
Call for volunteers: https://brimaruk.com/BrimarUK/wp-content/uploads/brimaruk-appeal.pdf