I was a student in Canada for 3 years. But I stayed for more than 3 months (it was not intensive). But when I realize that I am out of my permit, I left the country on my own (I did not get deportation). I now have admission to the University of Warwick, UK. Would this problem of excessive stay in Canada be a problem for the UK student visa? Is it possible to obtain the rejection of the visa due to this excessive stay?