Yet we still get more right-wing propaganda on a daily basis. Why might that be?
Because something like 80-85% of the MSM (mainstream media) is owner by off-shore parasites who actively support the right wing - again, seemingly, so they can perpetuate division and keep all that the economic gravy train allows.
A constitution could include a clause, that to own ANY media published here, can only be owned and managed by tax paying residents holding a UK passport.
Equally, it (a written constitution) could also ban any politically one-sided commentary. So they'd have to explain, not only the fantasy of their right-wing worldview, but also it's downsides, to give more of a clear understanding to those who need it (majority of UK voters).
Not all UK voters are thick/stupid/politically incompetent, but it would appear that they are.
The Clacton electorate being a case in point........