Any question answered...

It doesn't answer your question, but my advice would be not to take shortcuts. If you're in London, go to a reputable language school like International House. No language learning 'mechanism' or 'method' can replace good teaching and having actual people to talk to. I'm sure you know this and have chosen to go via the on-line route for a reason, so this is probably completely redundant advice. Ultimately, going for a proper course will be a big time and frustration-saver for you, though.

this is a good idea, i've looked at international house and it looks good but they dont do swedish, any recommendations for one that does?