Work Experience

This may be quite a specific question, but any help is much appreciated.

I'm going to be doing my GCSEs this summer and hope to get straight A*s (like everyone). I have also made my A-level choices for next year, and I'm going to be taking Maths and Further Maths, Biology, Chemistry and Spanish. I hope to pursue a medical career.

My question regards Work Experience, as titled above. I know that medical careers are highly competitive in this day and age, but is there something that I could do this summer (after exams) to get ahead of the game? I go to a private school so I have been told that I have to organise my Work Experience by myself.

I have a particular interest in pursuing a specific medical career, such as Neurology or Cardiology. However, I'm not afraid to mix with people and work hard if I have to. I've been thinking of perhaps volunteering in a elderly care home (there's a private home near me that I could inquire about), but are there any other types of medical work experience for people my age (16)?

Any responses are kindly received.

Thanks.