Haha I am not knowledge enough which is why I'm also asking for advice. I am in the same boat as you. You said you were doing accounting and finance right? I know the economics maths and business side of Warwick are top in the UK not sure about your exact course though. Don't know how good Manchester is for the course either I'm afraid. To get into IB you don't need a specific course, just a numerical or analytical one is preferred. I do know if your looking to go into front office then Warwick would be the way. But that's only if u r 100% sure that's your goal or will be striving towards it. Your not guarenteed to get it even if you do go Warwick. It's still highly competitive, you just get your foot in the door. Manchester is much harder for front office IB and your cv and interview skills should be exceptional to go into FO (they should be anyway but even more so at Manchester because its not a target).
If your interested in MO then Idk. Wait with me for a response lol