I wouldn't recommend going freelance in your situation. It seems like a silver bullet, but it's honestly quite a lot of extra work. In Denmark at least, we have

I wouldn't recommend going freelance in your situation. It seems like a silver bullet, but it's honestly quite a lot of extra work. In Denmark at least, we have a lot of legal requirements and reporting, that needs to be done if you're running a business. Failing to do most of it in time means being fined or paying interest to the tax authorities. I don't know if it's easier in the UK, but suspect it's not.