They have a constitution (attached - was a notable a dozen or so breads ago) and are supposedly opening party membership today. Don't know enough about UK politics to assess their document or political strategy, but I have questions about it. They're openly promoting / endorsing Q so I'm at least listening and watching where it goes. Sorta wondering if Boris Johnson recent resignation is related or if he is involved.
The account you referenced is related to / aligned with handle @British_Fight (previously aka @UK_Revolution17) who was announcing today's date as significant as the new party launch (coinciding with POTUS visit) for months before the @TPRParty handle appeared.
It's now morning in UK so we'll know soon enough. Reserving judgement until 13-07-18 is behind us. Stay safe UK patriots. WWG1WGA