There's really little information provided here for anyone to determine your chances. Even if we had a detailed CV, it's still difficult to conclusively say because a lot of the 'success factors' that go into a successful application go beyond your CV. A well written application, for example, plays a huge part.
For most firms, grades set the 'minimum' required for any hopeful applicant. So you'll normally need a 2:1 average or above to have a decent shot at applying for vacation schemes and training contracts. If your grades are better than the minimum 2:1, it'll help your application but it will not be as decisive as compared to an applicant with a 2:2 being considered alongside an applicant with a 2:1.