If you are continuing your full-time studies in 2017/18 you should have been contacted by Student Finance England (SFE) to re-apply for your student finance.
The sooner you do this the better, as the later you re-apply SFE can’t guarantee that the money will be in your account by the start of term. So you should be prepared to have some money put by for the first few weeks. You can find out how to reapply on the GOV.UK website.
Once your funding has been approved by SFE you'll be sent a Student Finance Declaration Form - which you need to complete and return to SFE to ensure that you'll receive your funding at the start of term.