Have you named her personally as a respondent or just the company
She cannot be named as respondent. The company is the employer, not her personally.
Additionally employees can be entitled to TUPE to the new company and there may be potential to use this to get the judgement against the new companies
No. TUPE deals with employees. It does not give a route for a non-employee to pursue a discrimination claim against the new business or get the new business to pay compensation awarded against the old business.
@Char1997 - one of the new companies has the same name but another word added on to the end of it which is SO annoying
That may be a breach of the Insolvency Act 1986 section 216. If the directors are in breach that is a huge mistake as it means they can be held personally liable for the debts of the original company. That would include any amount awarded by the tribunal in this case. You may also be able to argue that there has been a transaction at an undervalue (i.e. the assets of the original business have been sold to the new business for less than they were worth) and that the directors intended to defraud the creditors of the company (which would include you assuming you win your case). If they do wind up the existing company without paying, you should complain to the liquidator and refer the matter to the Insolvency Service.