Will I be classed as an independent student?

Hello,
I'm looking to go to uni in 2018 after completing an access course in 2017. The reason I'm on here now is I was wondering if what I was going to do would affect how much money I would be entitled too through student finance.

I've lived by myself working full time since 2015 earning approx £10000 a year. I was going to move into my grandparents home and rent a room from then at the end of 2016 to save up for a year off work to do my access course in September 2017. I would be paying them rent, buying my own food and paying for my own travel the whole year with my savings. Would I be classed as an independent student? I would have 3 years worth of P60s showing my income, proof I rented my own flat for two years and I lived with my grandparents for a year.

My parents are alive and we speak but are not on good terms so hence why I moved out and supported myself. If It makes any difference when I was 17 (I am 21 currently) I moved into a foyer for 6 months when studying at sixth form living on income support.

Will I be classed an an independent student or will student finance judge it from my parents income or on my grandparents income?

Thank you.

I think all you need is 3 years of 7k or more earnings to be an independent student .