Languages.... so worth it. My cousin graduated from Edinburgh studying german and arabic. He was also worried that edinburgh was not as prestigious enough as UCL, LSE, OXbridge, etc but still managed to get an investment banking internship with J.P Morgan because they love love love languages.
In my country people who go for modern languages are seen as losers but I guess it may differ in the UK; around here having a master's degree is a must to be considered human haha and it also has to be in a respected STEM subject or everyone thinks you're lazy and went to uni because you're scared of adult life.
So yeah, that said I love languages personally and would love to learn as many as possible (currently only know 3 including my native language, so that's kind of lame...). However, I wouldn't really like to base my future career plans on foreign languages... Don't know, if I was to study in my country I'd probably only take up a language as a second degree though you probably don't have that option because of the university fees. I'd go for French + whatever to keep your options open.