Ok, thanks, that's helpful - I'll maybe give Wren a call. I think doing it / ordering myself is out as my kitchen is an odd, four different angles in each corner - I'm happy to pay (to a point) to get someone to draw / plan it out and remove any of that risk from myself.
Wren Kitchens have cashback through quidco too it seems...
I don't know if that means that the forum may also have a cut through them if you buy from a link from here too though...