But yes, jurisdiction is an issue, however damage can be done; they don’t want to lose EU and these are violations of our laws so they should be hit hard.
You’ll likely also be awarded interest and the court-appointed interest rates are nothing to sneeze at (they’re based on the banks base interest rate plus a few percent)
Edit: went and looked it up: Interest is applied from the point when the defendant received the court papers and is currently the base rate plus 5 or 9 percent points.
All this means is that the losing party must reimburse your costs. Your lawyer is going to ask for money while the case is ongoing. So you need to have some serious money in advance.