The Home Office strongly recommends against booking travel to the UK before a visa is issued.
Global Talent visa holders must travel to the UK as soon as possible after the start date of their Global Talent vignette. Those issued a vignette valid for 90 days must travel to the UK within this period, as if they do not, they will have to apply, and pay, for a replacement vignette before entering the UK.
Travelling to the UK as a Visitor
Applicants should also note that, once they have submitted their Global Talent visa application, or after their Global Talent visa has been granted, they must not enter the UK as a Visitor (e.g. as a tourist). If they do, their Global Talent visa will no longer be valid, and they will not be able to start their employment. Any travel plans should be discussed with the employing department/ faculty/ college and the Staff Immigration Team (SIT).