Unless you've been disqualified from driving, this won't affect your policy until your next renewal.
If you've provided your Driving Licence number, there's no need to inform us.
If you've self declared your licence history, you need to log in to your account and update your details with the conviction/endorsement. You'll need to enter the date of the conviction and the conviction code, which you'll find at https://www.gov.uk/view-driving-licence
If you've been disqualified from driving, the policy will need to be cancelled. You can do this in your account.
If one of your named drivers has been disqualified from driving, please make arrangements to remove them from the policy in your account.