Hi there, sorry I was offline by the time you had replied.
The main issue is that 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. This means that your employer can terminate your employment for more or less any reason, and without following a fair procedure, as long as their decision is not based on a reason which makes a dismissal automatically unfair. These include:
· Discrimination due to a protected characteristic (i.e. because of gender, race, religion, age, disability, sexual orientation, etc.)
· Taking, or trying to take, leave for family reasons including pregnancy, maternity leave, paternity leave, adoption leave, childbirth and parental leave
However, if the dismissal had nothing to do with any of the above exceptions then you would not be able to challenge it. In that case your only protection would be if you were dismissed in breach of contract. That could happen if you were not paid your contractual notice period (unless you were dismissed for gross misconduct). If you did not have a written contract in place you would be entitled to the minimum statutory notice period of 1 week. Your employer would either have to allow you to work that notice period and pay you as normal, or they will have to pay you in lieu of notice.
So it does not really matter (from a legal perspective) whether you were given a job description or not or whether the employer is wrong on deciding your performance is not adequate. You could be the best employee they ever had and they could still say they are not happy with you and decide to end your probation. It is your total length of service that creates your rights and in this situation, I am afraid you do not meet the minimum criteria to be able to challenge this, even if you believe it was done unfairly.
Does this answer your question?