I have received a coding notice from HMRC for one of our employees. It is says that I need to change their current tax code 1185L to 2935L X. Can anyone shed any light on whether I need to do anything with the X. A few searches have suggested that this is related to Mth 1/Wk 1 so shall I tick this box on Sage? I can't enter 2935L X as Sage doesn't recognise it...... I have never come across X before!