Conversation so far:
why does the DVSA charge a fee for ADI registration
The ADI registration fee covers a number of elements: estimated Costs of registration team $149, examiners $146, Product quality and development costs $32, Administration and Overheads $28, Total costs $355
How many tests are needed to be approved as an ADI driver instructor
To become an ADI you must complete three qualifying tests. The first for your theory knowledge, second your driving ability and fitness, and third your ability to instruct learner drivers.

Question: What is required when you apply
Self-contained rewrite: What is required when you apply to become an ADI