GED is usually seen as equivalent to 5 GCSE passes but no A levels. No uni here is likely to accept you onto a degree course with GED alone. You need in addition 2-3 A levels or Int Bacc. Or you can do a foundation degree or uni access course first.
Now to do any of this you need a Tier 4 adult student visa. You need to be accepted onto an appoved course, and show you have the means to pay the tuition fees and all living expenses. There is very little financial help available to overseas students, and you aren't eligible for grant and loans UK home students get. You either need to have big savings, or being supported by your parents. You can work for limited hours in term time and full time at weekends and in vacations, but jobs are hard to come by in the recession-hit Britain, and in any case any money you hope to earn cannot be taken into account to show financial ability.
If there is a British Council near where you live, they can give you a rundown on studying in UK.
