No.
Terminating the employment of a specific employee, known as dismissal in the UK, does not always necessitate giving prior notice.
However, if an employee is dismissed, employers must have a valid reason for the dismissal that they can explain and they must display that the action was reasonable under the circumstances.
Additionally, before dismissing an employee, the situation must be investigated thoroughly, and the termination of employment must be consistent with the employer’s actions and decisions in cases of similar nature.
Further, part-time or fixed-term workers, cannot be treated less favorably than a full-time or permanent employee.