DD2 , who is in year 9, enjoys French and has a flair for it, but at her school she can only do one MFL GCSE. She is keen on learning Spanish as well, as she wants to travel to South America when she's older.
As I said, there is no provision in her school for two languages - they don't even offer taster courses in other languages and you have to pick either French or Spanish from year 7. It's incredibly annoying, but that's a whole other topic...
Does anyone have any experience of learning a new language at this level, and how you would go about sitting a GCSE externally? We are in London so I suspect finding a tutor wouldn't be a problem. Btw, I am a linguist (but not in Spanish, unfortunately) so I'm under no illusions as to the level of homework required. 
All advice welcome!