Are you in no doubt that they have now formally dismissed you OP. I mean do you have their written confirmation in a letter to confirm whatever they said verbally?
If so, and if as bunbunny has said, you have legal cover on your household insurance, then that legal cover should enable you to have a solicitor assess your claim, as you have an "event" to claim against ie potential unfair dismissal. They will need the above file and chronology of events, plus the evidence that your employers have dismissed you. They will need more than your employer's verbal dismissal, must be in writing.
If your employer becomes cagey and is reluctant to confirm in writing, then this may be a sign they are back-pedalling in their decision. Nothing you've said in your posts indicates a written confirmation.
As you clearly state you want to return, you enjoy your job, it is worth you pushing to retrieve the situation for them to reinstate you (or, if they haven't confirmed in writing, then they would probably set in motion a return to work schedule and in reality just distance themselves from their earlier verbal? assertion that you'd been dismissed). If, so, then happy days, if that's what you want.