Home Registrars Other ceremonies and services Citizenship ceremonies If your application to become a British citizen has been successful you will need to book a citizenship ceremony. When you receive your invitation you must swear or affirm an oath, and make a pledge of allegiance at a citizenship ceremony within 3 months. This is a legal requirement and if you miss the deadline you may have to apply again.Information we need from you:details from the invitation sent to you from the Home Officenames of your guests (up to 2 adults, plus children)What to bring on the day:the original invitation sent to you from the Home Officephotographic IDBooking a ceremonyFor more information or to book a citizenship ceremony please contact us. Help us improve this page Hide content Was this page helpful? Yes It was helpful, but Please select a reasonthere's a broken link it's hard to understand it's incorrect it's outdated it's too long Other No Please select a reasonit didn't answer my question it's not detailed enough it's hard to understand it's incorrect it's outdated it's too long Other Details Email address We’ll only use this to ask for more detail if we need to.