Some of the different types of visas which are available in UK are listed below:

                 Visa Type               

Purpose

Validity

Standard Visitor Visa

Attend meetings, conferences, sign contracts, training

Up to 6 months

Business Visa for Academics

Professors/researchers on academic business activities

Up to 12 months

UK Expansion Worker Visa

For overseas employees setting up a UK branch

Usually up to 12 months

Innovator Founder Visa

For Entrepreneurs establishing innovative businesses

3 years(extendable)

Global Talent Visa

For highly skilled professionals in tech, science, arts etc

Up to 5 years(extendable)

Start-up Visa

For new entrepreneurs starting first Uk Business

2 years(no extension)

Temporary Worker-Government Authorised exchanging visa

Short-term business exchanges, training or research

12 to 24 months depending on scheme