This is going to be an Oxford answer, but hopefully a useful one to you, as we're not that dissimilar to other top unis, and the points made earlier in the thread.
Our standard offer is A*AA, with at least an A in Maths. The A* has to be in either Maths, Further Maths, Physics or Computing. Maths is therefore essential to us. Computing is a mathematical subject, especially in the way we approach it at Oxford. So you will need to have developed your ability in mathematical thinking. We think doing both Maths and Further Maths to A2 is the best way of doing this, but we recognise that some schools are unable to offer this combination. We also suggest a science subject such as Physics. Our courses start from first principles so we're not looking for any specific knowledge in Computing (although we are looking for a genuine interest in the subject.) Some students come to us with Computing A/AS Level; others don't. So you've got an excellent choice of A Levels for us in the ones that you list. We make offers based on three A Levels. We'd notice any in addition to that but it wouldn't form part of an offer we made.
Non-native English speakers do need to meet our
English language requirements, but you could do this, for example, by getting a grade B in English Language GCSE. An A Level in English isn't going to help convince us of your potential to be a good computer scientist, so wouldn't particularly be a plus on your application. Yes, you're going to need a good level of written and spoken English, and you're going to need to demonstrate that to us during the application process. But you don't need an A Level in English to do this.
The exception to this is if you're considering our joint degree in Computer Science and Philosophy, when recent experience of an essay-based subject at A Level can be useful. But event then it's by no means essential.