Aspiring Geophysicist I am interested in becoming a geophysicist. I am currently doing my undergraduate degree in the UK but have not chosen a specialisation. Is it better to specialise in Earth Sciences as an undergrad or go with Physics?

I like quantitative fields but I feel that undergraduate Earth Sciences does not offer such quantitative aspects. I also really like physics but feel that applying it in the context of the earth is really interesting. As becoming a geophysicist would probably require me to go to grad school, would an undergrad degree in Earth Sciences or Physics better prepare me to study Geophysics in grad school?
I would recommend to do an undergraduate in physics.

I work at a department of Meteorology.  When faculty hire a new PhD student or postdoc, they often prefer those with an undergraduate in Physics than with an undergraduate in Meteorology.  The Physics degree gives a better preparation for doing science.  It has more maths and physicists are more likely to have some programming experience than meteorologists.  For most scientific positions, such programming experience is highly valuable.  It appears the meteorologists are more likely to end up in jobs like weather forecasting or energy trading, rather than science.

Although this experience may be quite localised, a physics undergraduate degree does give you a more generic background.  It's easier to catch up on the specifics of geophysics when you have a physics background, than the other way around.