Originally Answered: How to get jobs abroad. ie usa? (im from the UK)?
you could consider doing a PhD in the US. As tuition fees are very high you would need to make sure that you get into a program which offers scholarships for that and also gives you a teaching assistant position or some other means by which you can earn some money. What your options are depends how good your grades are and how much you managed to get extra experience through volunteering in labs or working in labs while a student.
With just a bachelors degree and no work experience you will find it much harder to get a job in the US. There are plenty of people with bachelor degrees in biological/biomedical science. An employer has to pay extra for a work visa if they want to employ a foreign worker and they also have to show that no other suitable candidate is available.
Getting a PhD in the US will, however, not ensure that you get employment. But it would give you additional qualifications. If you do well you should not have too much trouble finding a postdoc job in the US, though it will still be not easy to get a greencard. However, if you do research in the medical field you can apply for a national interest waiver, but that would be years down the line, so I'd not worry about details in this aspect.
Given the difficulty of getting work permits abroad I suggest you look for and accept any job (e.g. supermarket, cleaning) in any field while you search for a proper job.