If you are a citizen of a non-European Economic Area (EEA) country or Switzerland, it is typically necessary for you to obtain a visa prior to your arrival in the United Kingdom for employment purposes.
In most instances, individuals from outside the EEA who wish to work in the UK must apply for a Tier 2 (General) visa. This particular visa is intended for individuals who have received a job offer for a skilled position in the UK, encompassing occupations such as accounting, engineering, teaching, and information technology.
Depending on the nature of the job offer, you may be eligible for a different visa category. Each visa category has its own set of requirements and application procedures. For instance, the Tier 5 (Government Authorised Exchange) visa is designated for individuals participating in approved exchange programs.
When applying for a work visa, it is generally necessary to demonstrate that you have received a job offer from a UK employer and that you meet the eligibility criteria for the specific visa you are seeking. Additionally, you may be required to provide evidence of sufficient funds to support yourself and any dependents throughout your stay in the UK.