How can anyone seriously maintain that systems of power and wealth in the UK were NOT achieved through violence? The British Empire, the slave trade, the civil wars and invasions that established royal houses.... Britain engaged in a huge amount of violence for hundreds of years, and its continuing status as a wealthy world power is a direct legacy of that.
Democracy is nice in theory but the reality is that the privileged elite hold the most power in society and that is difficult to shift. See here
"Three in four senior judges, 59 per cent of the Cabinet, 57 per cent of permanent secretaries, 50 per cent of diplomats, 47 per cent of newspaper columnists, 33 per cent of the Shadow Cabinet and 24 per cent of MPs went to Oxford or Cambridge University.
In 2012, only 25 of the 600-plus recruits to the civil service “fast stream” were from working class backgrounds."
There is more in the report.
This status quo is maintained through at least the threat of violence, because the idea of even a peaceful change in power is just a non-starter. We have seen peaceful antiwar demonstrators kettled in London, there is massive surveillance of activists and ordinary people. Only the state has the legitimacy to use violence in society, and they use that to maintain the status quo.