Maintenance loan based on partner's income?

I have just reached the section where I have to provide financial information for a higher maintenance loan. But I was wondering if there was a way where my financial information can be based on my partner's income rather than my parents.

I am 21, graduated from Uni last year, working full-time this year and will be studying a PGCE next year. I have lived with my partner for the last two and half years and will be living with each other when I study next year.

I am assuming I can't apply as an independent student because I still have contact with my parents and during the final two years of Uni I've financially supported myself through Student Finance [based on parent's income] and part-time jobs. I did not (and still don't) receive any financial help from my parents, and will be the same situation next year. Having the financial assessment based on my partner's income rather than my parents will mean I am able to get a higher loan. I'm rather worried as it will be a huge struggle to move and live in a city like Cambridge on such a small loan.