Alternatively, there is nothing to stop the employees doing this and they may be better off since under Insolvency Act, employees have a right to be paid over and above trade creditors. But this is not something to commence without very careful consideration as it may result in the clsong of the business.
To the best of my knowledge, within the EU you can get the salary from the taxpayers if the insolvent company can't pay out. You do have to file the employer as bankcrupt within 3 months from the day you earned the salary that hasn't been payed out.