Unfair or Wrongful Dismissal?

I’m currently five months into a six-month probation period at my new job. On the third day of the year, at the end of my shift, I was called into the conference room by my manager and informed that my contract was being terminated with immediate effect.

The reason given for my dismissal? One job completed two weeks before Christmas was labeled as “too slow.” Let me clarify: since I started, I’ve worked on over 30 jobs, all of which were completed on time without any issues. In fact, during some tasks, we were told to slow down and take our time due to the nature of the work. The job involves operating heavy metal press machines and handling sheet metal, which is inherently dangerous and cannot be rushed for health and safety reasons.

I can’t shake the feeling that this dismissal might be a personal attack by a manager who has attempted to bully me in the past, and who is known around the workplace as “the Hulk.”

So, my question is: does this situation qualify as an unfair or wrongful dismissal without notice? Should I consider contesting it?

I would greatly appreciate any advice.

Thank you!