Contact HM Revenue and Customs (HMRC) as soon as possible. You might be able to set up a payment plan to pay in instalments. You will need your National Insurance number or unique tax reference (UTR) number when making contact.
Business Payment Support Service Telephone: 0300 200 3835
Monday to Friday, 8am to 8pm
Saturday and Sunday, 8am to 4pm
If you need time to repay your tax credits the Telephone: 0345 300 3900