I don't think you will be able to get into uni sim
They have some specific requirements: Above 21 , done 2 yrs of
employment or currently holding down a job...
Anyway, I would recommend sim global, because the cert you get
will be from the foreign uni itself (more recognised/quality).
But then sim global is damn ex...at least 20-30k and you won't
get much subject exemptions too because you only have an 'A'
level cert...not like if you're from poly (more exemptions). But
you grad faster than if you go to uni sim, coz uni sim only has
part time courses ma..