Forced to leave my job

Hi, i was after some advice. I have worked for a big company for the past two years and was under contract as a team leader on the factory floor. i was approached about 10 weeks ago and told that they were understaffed in the offices and wanted me to cover for a tempory period of 8 weeks changing my hours of work and breaks ect. I agreed to this and done my 8 weeks. After my 8 weeks were over i asked on a number of occasions to go back to my proper job as i wasn't enjoying my tempory position or the hours ect. i kept getting fobbed off and told they would try and sort it out for me. during my 10th week of my 8 week tempory job i found out that all the team leaders and supervisors on the factory floor which is my position were all called into a meeting and told they were restructuring and would all be offered redundancy with the option of reapplying for the new roles and anyone who wanted to stay there would have a job albeit with a different title. i was not told about or invited to this meeting even though in my mind and in my contract i was still a team leader. i went to my manager in my tempory position and said i was not happy and couldn't do this job anymore and wanted to go back to my proper role. i was told this wasn't possible. on that note i told them i would have to leave. i then clocked out and left without signing anything. the next morning i called my old manager from the factory floor to see if she could do anything and i was told i had already be registered as a leaver with hr and they were not taking on so i couldn't go back to work. is what they are doing right and legal. i was told it was a tempory role but it turns out i could never go back to it. surely this is a breach of contract? any help on what i can do is much appreciated. thanks

How very disappointing that so many threads on here go unanswered. Let's see what we can do about that - it may be too late for the OP here, but not for someone else.

Unfortunately, OP, you have handled this is just about the worst way that you could have. A verbal resignation is as binding in law as a written one, and so the employer was entitled to accept and process it. The really unfortunate thing is that the employer was certainly in breach of contract, and based on what you have said, also in breach of the law. But you should have handled this by submitting a formal grievance, which apart from anything else, had it not resolved the problem then it would have provided you with a valuable evidence set to make a claim of unfair dismissal. However, having resigned, you have foregone that, and it is unlikey that any attempt to claim constructive unfair dismissal would succeed.