- Only overseas nationals in the following categories are allowed to switch to a work permit from within the UK:
- Any Tier 1 or Tier 4 category
- Tier 2 (General)
- Tier 2 (Sportsperson)
- Tier 2 (Minister of Religion)
- Tier 2 (Intra-Company Transfer: Established Staff) if you are applying to change sponsor
- Tier 2 (Intra-Company Transfer), under the rules in place before 6 April 2010 if you are applying to change sponsor
- Tier 5 (Temporary Worker) in the Government Authorised Exchange sub-category, for a job as an overseas qualified nurse or midwife
- Tier 5 (Temporary Worker) in the Creative and Sporting sub-category, for a job as a professional footballer
- Dependant partner of a Tier 4 migrant
- Highly Skilled Migrant Programme
- Innovator
- Business and Commercial work permits (except multiple entry work permits)
- Sports and Entertainment work permits (except multiple entry work permits)
- Jewish Agency Employee
- Member of the Operational Ground Staff of an overseas-owned Airline
- Minister of Religion, Missionary or Member of a Religious Order
- Overseas Qualified Nurse or Midwife
- Person Writing Up a Thesis
- Postgraduate Doctor or Dentist
- Representative of an Overseas Business