Help I can't remember how to express V1 and V2.

 

no need to remember - try drawing it again, from the 12v down to the GND and you'll see which resistors are parallel and which are serial to each other.

 

You can use nodal analysis and express each current as (delta V)/R

 

You can use nodal analysis and express each current as (delta V)/R

I would have hoped for a bit more help but I've got it now with this, thanks.