If employment is terminated by the employer without just cause, this is called an unfair dismissal. Usually when a dismissal is for a reason that the employer is able to justify, a dismissal is not unfair.
A dismissal may be considered unfair in different situations including:
The dismissal would usually be unfair if you are dismissed because of
The employee would usually be entitled to claim for the unfair dismissal. If employee and employer are unable to reach an agreement, the employee may take the case to the Employment Tribunal.
In most cases an employee cannot claim for an unfair dismissal if they have worked in the company for less than 2 years. However, if you have reasons to believe that you were discriminated against (examples would include sex, ethnicity, disability etc), you may still be able entitled for a compensation.
You need to start taking action for an unfair dismissal within 3 months of being dismissed.