This was essentially the whole point of my original post about consultants. But people dont get this. After all taxes are paid, you get something like 375-475sek/h if even that as this is the above average level of salary.
Compared to when I lived and worked in London, this is a joke. That´s before factoring in cost of living relative to income. You live a much better life in London than you do in Sthlm for instance so I am not sure where you got that last part from. Especially if you consider how massively fucked the Krona is right now
You're also going to pay taxes being self-employed in the UK, and whether you prefer London over Stockholm is subjective; what you need to consider is the cost of real estate mainly vs statistical incomes, rather than anecdotes.
Regarding how "massively fucked" the Krona is, check this chart: https://www.xe.com/currencycharts/?from=GBP&to=SEK&view=5Y