The Global Business Mobility (GBM) visa routes are designed to facilitate overseas businesses in transferring key staff to the UK for temporary assignments. These visas cater to five distinct categories: Senior or Specialist Worker, Graduate Trainee, UK Expansion Worker, Service Supplier, and Secondment Worker. Each route is tailored for specific business needs ranging from establishing a UK branch, training future leaders, fulfilling service contracts, to enabling intra-corporate transfers. Applicants must be sponsored by a licensed UK sponsor and meet eligibility criteria, including salary thresholds and skill levels. GBM visas do not lead directly to settlement but allow skilled professionals to contribute to UK business operations.