If you do not get an endorsement, you may be able to apply for an endorsement review to the Home Office. You need to do so within 28 days after you get the decision.
The review procedure has its own specific requirements:
You can appeal only once. If it is not satisfied in your favour, further appeals will not be considered
A representative of the Home Office decides whether to review the refusal or your application or not
If you are refused because there is not enough evidence of your talent, it is useless to submit the missing papers with your appeal. The reviewer will not consider them.
In fact, you have a chance of reviewing your application only if you are absolutely sure that you are right and have provided all the necessary documents to prove leadership in your field, but the Home Office or a government endorsing body has made a mistake. For example, a visa officer did not send some of your documents or a government endorsing body did not consider them carefully and rushed to make a decision.
Obtaining a UK Global Talent visa is a complex procedure that requires significant attention and a large amount of supporting documentation. If you apply for a Global Talent visa to the UK with the legal support of Imperial & Legal, the risk of refusal will be minimised.