- Flexible work visa – eg no restrictions on salary, number of hours or place of work. Allows for unpaid leave, sabbaticals, secondary work, and consultancy.
- The visa duration is not tied to the contract of employment, fellowship or grant length. You can choose the length of your visa, up to a maximum of 5 years.
- Fast track for settlement (indefinite leave to remain) after 3 years (normally 5 years) for the main visa holder.
- No requirement to have a confirmed job offer in the UK.
- No sponsor duties
- No ATAS requirement
- No English language or maintenance requirements for the visa application
The only disadvantage is that the administrative burden lies with the applicant and for some endorsement routes, there is no guaranteed outcome (in particular, peer review). It may also take time to prepare your endorsement application.