Since 31 March 1931, The U.K. operated a points based immigration system.The points based system only covers nationals from outsider European Economic Area(EEA) and Switzerland
The points-based systems contains of five tiers These are
- Tier-1.highly skiled workers, for example the scientists , entreprenures.
- Tier-2.skilled workers with a with a job offer, for example teachers and nurses.
- Tier-3.low skilled workers filling specific temporary labour shortages(Currently suspended)
- Tier-4.Students.
- Tier-5.Youth mobility and temporary workers, for example musicians coming to play in concert