Thank you very much for clarifying. First of all, I am sorry to hear about the issues you have experienced in your situation.
Just to clarify at the outset, the rules I work under do not allow me to discuss your chances of success in court. When solicitors determine these, we would conduct a formal case analysis and take the full details and evidence that are available into consideration. On this site we deal with very limited information in a Q&A format, so inevitably certain details and evidence will be missed. Therefore, if we discussed prospects of success based on this limited information alone, we could end up giving misguided advice and prompt you into either making a claim or not making one, when in reality we may have advised the opposite had we known the full details. That is why we are only limited to discussing the legal position and your options, without actually commenting on how good or bad a case you have.
When it comes to the question on costs, the usual position is that the losing party does not pay the winning party’s legal costs. However, there are circumstances when this is not the case and generally it is only when one party has acted in a vexatious or unreasonable manner, to such a degree that the proceedings were severely affected by their conduct.
Another possibility is if you were pursuing a case which had no reasonable prospects of success and were warned by the Employment Tribunal or the other party about it, but unreasonably carried on with it regardless.
So this last part is where you most likely run the risks of costs against you being awarded by the Employment Tribunal but it will only be if you continued with it despite formal warnings that it is weak and should not continue. It would not be at this stage but later on, once you make the claim and it is accepted in the Employment Tribunal and it progresses, but they then issue you with the formal warnings.