Incorrect P45 when made redundant

dodgy_gooner

When I was made redundant my employer mistakenly generated my final payslip with all my redundancy paid to me which as it was over 30K meant I was taxed on some of it. This was incorrect and I was in fact only paid the 30K with the remaining going straight into my pension to keep that money tax free too however my P45 was generated based on the whole amount being paid to me including all the extra tax I would have paid if I had taken the money over 30K. I asked my company if they could get the P45 corrected but they tell me they cannot do this even though they acknowledge it is incorrect. Will the inland revenue be aware of this otherwise my earnings and tax look significantly higher than they really were.

Thanks.