Very good - I'm stuck between oxford and cambridge (like you I believe)
But here goes:
GCSE - 9999999998
A level predicted - haven't been given but I would say bio, maths and physics A* and chem A/A* (because grade boundaries are so high!)
college - not sure yet like emmanuel + jesus but may not even apply to cambridge
work exp - 1 week cardiology, 1 day paed oncology, 1 day geriatrics (3 hours), 1 week GP, 4 months volunteering + 2 weeks (full) at a SEN school
Read a fair amount of medicine books - Fragile Lives my favourite