Thank you. The law does provide for certain requirements when disciplinary action is taken against an employee to ensure that this is done fairly. However, this is only relevant to employees with at least 2 years service, which unfortunately you do not yet have.
So if you have been continuously employed at your place of work for less than 2 years then your employment rights will unfortunately be somewhat limited. Most importantly, you will not be protected against unfair dismissal or constructive dismissal. This means that your employer can dismiss you or force you to resign for more or less any reason, and without following a fair procedure, as long as their decision is not based on discriminatory grounds (i.e. because of gender, race, religion, age, a disability, sexual orientation, etc.) or because you were trying to assert any of your statutory rights (e.g. requesting maternity/paternity leave, etc.). Therefore, they could follow an unfair disciplinary procedure an dismiss or force you to leave as a result of treating you unfairly in the process and you cannot challenge it, subject to evidence of discrimination.
At this stage the best you can do is just defend the allegations as well as you can and hope that this does not result in dismissal.
I hope this has answered your query. I would be grateful if you could please take a second to leave a positive rating (3, 4 or 5 stars) as that is an important part of our process and recognises the time I have spent assisting you. If you need me to clarify anything before you go - please get back to me on here and I will assist further as best as I can. Thank you