How long a person can stay in UK with tier 4 visa after completing the course?

A High Potential Individual (HPI) visa gives you permission to stay in the UK for at least 2 years. To apply, you must have been awarded a qualification by an eligible university in the last 5 years. Check the list of eligible universities for the month and year you were awarded your qualification: "https://www.gov.uk/high-potential-individual-visa/eligibility" For more information please visit : https://www.gov.uk/high-potential-individual-visa

If you are a student from India who plans on studying and working part-time in the UK.

The UK government recently introduced the Graduate route for international students looking to continue working after their studies. This gives students the freedom to stay in the UK to work or look for work without being sponsored by a company. Undergraduate and postgraduate students can work or look for work after their studies for a period of two years, while doctoral students will be granted three years.

To qualify for a UK Graduate route visa, students will need to have a valid Tier 4 visa at the time of their application. They will need to show that they have completed the entirety of their course in the UK as a student

Only students enrolled in full-time degree courses are eligible for employment; students applying for further education colleges on a short-term visa may not work while studying

How long you can stay depends on the length of your course and what study you’ve already completed in the UK. If you’re 18 or over and your course is at degree level, you can usually stay in the UK for up to 5 years. If it’s below degree level, you can usually stay in the UK for up to 2 years.

For more detail please visit : Student visa : Overview - GOV.UK (www.gov.uk)

Typically for below degree level course, you can stay up to 2 years after completing the course. However, you must have the permission to remain in the UK.