I can’t speak for the Politics department, but the Philosophy department at Warwick is brilliant, currently ranking joint 2nd for Philosophy departments in UK universities.
I just finished studying Philosophy at Warwick, and the lecturers seem (and are) genuinely enthusiastic about their discipline. Of course, like with anything, there will be certain lecturers who you find more engaging and enthused than others, but, on the whole, the teaching is to a really high standard.
There is also a very wide range of modules which you won’t find in other Philosophy departments, especially in Continental Philosophy. There are specialist modules unique to Warwick such as ‘Appearance Matters’, looking at the beauty ideal as an increasingly ethical ideal, and ‘The Philosophy of Terrorism and Counter Terrorism’.
Also, the university doesn’t match two subjects together for no reason - it’s a very thought out process, and so it is likely that Philosophy and Politics together at Warwick is a good combination. There are modules which are solely focused on Philosophy or Politics separately from the departments, or there are some with overlap, such as ‘Democracy, Authority, and Resistance’ which I did in second year.
I really recommend !! 🩷