Since 2007, the Lambeth Diploma and Lambeth MA are no longer offered by the Archbishop’s Examination in Theology (AET) because of the launch of MPhil/PhD research degrees. The research degrees programme has been developed with Quality Assuarance Agency requirements and general university standards in mind.
The Archbishop of Canterbury enjoys the right to grant these degrees by an Act of Parliament in 1533. This act gave Archbishop Cranmer the right to grant dispensations previously granted by the Pope.
Does he offer degrees over the internet? For a modest fee perhaps?