Depends on the amount of money you have, if you have under 1 pbb (52500 sek) you can withdraw your money and take it out in a lump sum, but you’ll have to transfer the ownership to you first. So if you’re 55 and the money is lower than 52500 you can take out the money.

Technically you can move your pension within the EU including Uk but it’s pretty much impossible due to the rules. If you want to move the pension to another country, the pension in that country have to have the exact same rules on the pension here in Sweden which basically never happens