Sign in to the Machine Games Duty (MGD) service to:
update your personal details
cancel your registration, for example if you’re no longer responsible for the duty, you remove the machines or you stop trading
register as part of a group of companies rather than individually
add, change or remove an agent authorised to file returns for you
You can also contact HM Revenue and Customs (HMRC). You’ll need to tell them your registration number.
Switch to file online instead of sending paper returns
If you already have an HMRC online account, sign in to add the service.
Otherwise, register for an HMRC account and sign up for Machine Games Duty.