You will need to attend a citizenship ceremony if you’re 18 or over and have successfully applied to become a British citizen.
During the ceremony you will have to make an oath of allegiance or an affirmation and a pledge to respect the rights, freedoms and laws of the UK.
At the end of the ceremony you will be presented with your certificate of British citizenship and a welcome pack. If you attend a virtual ceremony, you will be sent a copy of the certificate afterwards.
Usually, you must attend a citizenship ceremony within 3 months of receiving your invitation from the Home Office however because of coronavirus, this has been extended to 6 months.