I wouldn't do health/social care. Despite what unis say they will still look at it unfavourably especially if they would be stuck between giving you an offer or someone with maths or a humanities subject. Also media and biology is a quite strange mix. If you like Maths then I would highly suggest to do that even until AS when it is not that hard at all. Sociology, Economics, Biology, Geography, History and Maths are ones that I would do alongside Biology.