Please help redundancy paid in error

Rmwilliams10

Hi all, I'm hoping for some advice on this. In January this year my team got told we were going to be made redundant. Because I was on secondment at the time my end date was deferred to November 30th this year. In the meantime I managed to find a job I'm the same company. Unfortunately HR have paid me both a redundancy payment and a one off payment in lieu of a bonus. I'm absolutely fine to pay this back but with the overpayment in excess of £6500 I have paid a lot of tax, NIC and student loan. If my employer takes this back off me immediately I will be left short this month. Can anyone offer any advice on the way payroll or myself should handle this? I have contacted HR to highlight the error but that's all so far. Thanks

System

Your payroll department should be able to take it back and take into account the tax, NI and student loan. At least my old employer did this, are you 100% sure you weren't entitled to the money?