How about dfs for the sofa, i spent 2 hours in there when i bought mine
so many to choose from,and loads of contempory ones too.
Some of them you can change to corner sofas or just make wider...
They bolt them together these days so you just add or take bits out as you see fit. S%*t im starting to sound like a salesman now
As for the kitchen, were you thinking gloss red doors and draws
and maybe black granite/marble work tops..with black slate floors
Do you want solid timber [hard or soft wood] doors and draws
I can't help with doing the job itself, but if you want i can give you a call
and go through all the little details you might not of thought about.