My Cambridge offer is A*A*A with A* in further maths. My Imperial offer is A*A*A with A* in maths. While I'm sure that I'll get an A* in physics, I am not too sure of further maths because grade threshold for A* are sometimes extremely high like 195/200. So I am more likely to get an A* in maths than further maths.
Do you think it's a wise choice to make Cambridge my firm and Imperial my insurance?
What was the reason you didnt like either Bristol or Bath. They are very different campuses and this may have a bearing on where it is worth looking at.