Qmul contextual offer?

I applied for the psychology bsc at Queen Mary's and was wondering if I could get a contextual offer if the school I attended for GCSEs was below national average? The school I’m attending currently for sixth form is above national average for educational outcomes, however the school I attended previously is notorious in my area for being one of the worse performing schools. Would this be enough for me to be considered for a contextual offer?( I got predicted A*AC and I’m unsure if my C ended up being increased so idk if I could be given an offer in the traditional way) Moreover, I think my teacher included that my house is overcrowded and that I share a room in my reference.