This is currently an internal matter between you and the university. While there is a legal dimension to it and instructing a solicitor now may add some value to this matter for you, equally, involving a solicitor at cost may inflame matters further between you and the university.
Do not get angry or upset with the university as they will only use it against you at a later date and you may say or do something that will prejudice your claim and damage your credibility.
If the university find against you, you may have a claim for Breach of Contract for which you may pursue the university for damages in the form of a refund on your course fees paid.
I recommend that you await the outcome of the internal process and then seek legal advice upon consideration of the result if it goes against you.
You may also lodge a formal complaint with the independent regulator and student advisory body for higher education providers. These are:
The Office for Standards in Education, Children’s Services and Skills (“OFSTED”): https://www.gov.uk/government/organisations/ofsted;
The Education and Skills Funding Agency: https://www.gov.uk/government/organisations/education-and-skills-funding-agency; and
The Office of the Independent Adjudicator: https://www.oiahe.org.uk/.