I wonder if anyone here has experiences with the mathematical tripos/natural sciences tripos at Cambridge. I'm currently holding an offer for Maths there (conditional on STEP) and opting to do maths with physics, and if I get in I MAY transfer to do physics in the natural sciences tripos in the second year. I've heard that maths with physics will be a huge workload for first year so I don't know if any of you guys can provide advice on this. Also, since the mathematical tripos has a large number of theoretical physics choices beyond first year, is it worth transferring to the NST if I'm primarily interested in theoretical physics, or is it better to stay in maths? I also gathered that the mathematical tripos is a very rigourous programme (which is what I'm interested in). To what extent is this true or an overstatement? Can someone possibly give a sort of "review" for the course? Thanks!