You can ask the tribunal to reconsider the decision if you lose the case.
You must write to the tribunal office within 14 days of getting the decision, saying why you want it to be reconsidered.
You need to give good reasons, such as:
the tribunal made a mistake in the way it reached its decision
you were not told about the hearing
new evidence has turned up since the hearing
Send your letter to the tribunal office that dealt with the case.
Appeal to the Employment Appeal Tribunal
You can also appeal to the Employment Appeal Tribunal if you think the employment tribunal made a legal mistake.