Imraan
Hi and welcome to AS. The immigration laws in this country are now stricter than ever for those wishing to migrate to the UK to live and work here. Most recently, there has also been a tightening of the migration rules for student visas.
See here for more info.
Many colleges have had their ability to accept foreign students restricted or removed completely. This means less places for an ever growing number of potential students. In addition, visa applications from some countries have been suspended altogether due to an unusually high number of applications - more info here.
From reading these articles, if you really want to study in the UK at some point, I think your best bet is work hard to get the best grades you can, improve your english as this seems to be a key factor now, and research your UK college well. Unfortunately, as far as I can tell, not all are genuine, some are just a front for providing the necessary student documentation. These are in the minority, hopefully, just be careful before handing over any money.
Good luck with your studies.