I am a current UK-German Connection Ambassador, who would like to encourage you and support you if you are interesting in becoming more involved in German and promoting German to younger students and your peers.
This will be highly useful if you want to apply for German at University at all
Theres also facebook pages which I'd encourage you to join with updates and the opportunity to speak to others from UK and Germany
What do you have to do exactly? I've always been interested in promoting German and was a student ambassador at uni. I work full-time now so I'm not actually able to attend any events but I could do online promotion.