Is it possible to transfer form a non-russell group university to a russel group uni?

Would this be possible?

Yes. Are you speaking first year at non-RG to 2/3 at RG for undergraduate? A lot of universities require that you meet their original conditional offer ie AAA/AAB etc. before you can even consider transferring as well as getting, usually, a 2:1 in your first year.

Sorry to bump this but I have a question which relates to this thread.

So what if you get a first in your first year of Uni(At Salford or somewhere) but want to transfer to say Uni of Liverpool because it's closer to home, but your A levels grade were poor? Would Liverpool reject you even though you got a first in the course you're doing?

Look at this:
http://www.thestudentroom.co.uk/showthread.php?t=1781424

Sorry to bump this but I have a question which relates to this thread.

So what if you get a first in your first year of Uni(At Salford or somewhere) but want to transfer to say Uni of Liverpool because it's closer to home, but your A levels grade were poor? Would Liverpool reject you even though you got a first in the course you're doing?