The UK Ancestry Visa gives Commonwealth nationals with a grandparent born in the UK, Channel Islands or the Isle of Man an initial visa to work and live in the UK for up to 5 years, after which an application can be made for permanent residency.
The UK Tier-1 Visa has replaced the previous UK Highly Skilled Migration Programme (HSMP). The new visa works on the same points-based system as the HSMP and allows highly skilled workers to migrate to the UK for work or self-employment opportunities.
The UK student visa (tier 4 study visa) allows you to study and work once you are studying for at least 6 months and are offered a place in a UK educational institute. The UK is recognized as having some of the world's best colleges and universities.
UK Tier 2 (Intra-company Transfer Visa) - This category is for employees of multinational companies who are being transferred by their overseas employer to a UK branch of the organization, either on a long-term basis or for frequent short visits.