ULPT Realistically, what’s stopping someone from taking out multiple loans and then leaving the country for years solo travelling / living abroad?

This may be a bit of a stupid question, but in the UK, loans and debt are statute barred after 6 years (may be different in other countries). If someone were to go travelling for many years using their savings and taking out multiple loans, is there anything that can realistically stop them from doing this apart from the threat of arrest when returning?

If the person planned on never returning / not returning for over 6 years, would there be any genuine problems?

I’m aware that this is most likely a really bad idea and don’t plan to do this - just curious.