Hi Poojashetti,
I'd say you have a good chance at both Oxbridge schools with this score - but only if you manage to make your application interesting enough. It may be hard to differentiate yourself if you come from very common demographic/background - but then, some people get admits even with what is considered a very typical profile.
Also, try to apply as early as possible, as the schools tend to use later rounds to create more diversity, and so your chances will probably become lower.
Good luck!