Send a letter, and the documentation required, in confidence, to your Inspector of Taxes — the address is available from your employer’s personnel or wages office.

Mark the envelope as “private and confidential” of the tax office which deals with your affairs and quote your National Insurance number and Tax reference (available from your wages office or often it is on your wages slip).

Your income tax records will always be changed and any further correspondence will always be addressed in your new legal name. If you advise the DWP of your change of status, then you must advise the Inland Revenue at the same time … but you should not of course notify these changes until you have also informed your employer.