Evidence of separated parents

you will need to demonstrate that your Dad lives elsewhere - where do his bank statements go, where is he registered with a doctor? If all still at your address then that is probably where he will be considered as living for these purposes.
I have divorced friends who are still having their income taken into account for their kids because they pay child maintenance now.

Sorry but it sounds like your Dad is trying to live under the radar and that won't help you here. Maybe you need to send an email explaining everything but fundamentally it sounds like he is actually living with you more than anywhere else (in terms of officialdom) so that is how it will be taken. He will need to provide evidence of earnings for FY 18/19 - if he doesn't then they will just give you the minimum that everyone qualifies for. It may be that your Mum's salary would have led to the same result anyway if she is a high earner.

Hello so basically when I filled in my application for my student finance it wanted the status of my parents relationship. I put that they were still legally married however didn’t live in the same household.

So now they want proof however we don’t have the kind of proof they are asking for. I thought maybe I could show them the council tax which shows my mums name on it only however my brother lives with us and he’s 23 so i don’t know if it will show the 25% off discount thing.

My dad also doesn’t have a permanent residence as he lives in work.

What should I do?

Hi Leah, your mum should complete a Marital Status Declaration Form and attach any evidence listed on the form.

The form can be downloaded here http://ow.ly/d/8nhE. If you have any further queries please let us know. There might be a slight delay in responding.
Thanks, Isaac.

Would my mum still have the 25% discount on her council bill even though my brother who is 23 years old lives with us?