Almost all UK institutions will have a dedicated careers service so make sure you make use of them during your time at university. Many have work experience opportunities advertised, mentoring scheme or even mock interview and assessment centres, all useful experience when applying for jobs. Make sure you take advantage of your careers service.
Working after you study
The majority of graduate employers will be happy to accept applications from students who are international students. However they need to have a sponsor
Some companies run schemes that allow graduates to train in the UK offices for 1 or more years, and then relocate to the organisation in their home countries, subject to the needs of their business.
Each year, the Destinations Leavers from Higher Education Survey asks graduates what they are doing 6 months after leaving university. Each University will publish their results so make sure you take a look to find out what sort of career you could have once you've graduated.
Working after your studies - advice from the UK Council for International Student Affairs
The British Council also provide advice on working in the UK after graduating.