If there's a system in the UK that is slow, and a system in Sweden that is fast, why is blockchain / crypto / smart contracts etc. the solution to the UK's slow system instead of whatever Sweden is doing -- since whatever Sweden is doing is working?
My experience is that things like this is often deeply rooted in the culture, legal system and business practices in a country. It is not easy to copy those things from one country to another. Especially where we have quite different legal systems. Additionally in the UK people are proud of getting on, despite old fashioned systems. Whereas in Sweden they strive always to modernize. So, different cultures.
(Of course, huge generalization there. For example the UK has done better on open data in the government than the Swedes have done, so in this case the whole thing is reversed. )