HMRC have recently started issuing PAYE coding notices for 2015/16. If you believe the PAYE code is incorrect then it is now possible to inform HMRC of why you think the code is wrong online 2015-16 PAYE coding notice query form.
HMRC can still be contacted by phone to query or amend PAYE codes - Telephone: 0300 200 3300.
Please contact us if you would like to assistance with checking PAYE code number.