Tall units up to the ceiling can look very nice, although would function as displays mostly. Honestly standard height kitchen wall units wouldn't concern me, they might accentuate the height which is not a bad thing at all. Alternatively if you have enough storage in the base units why not skip wall units altogether? Open shelves or even nothing, just a stunning splashback

That’s good they will give you a sample. Had a quick look on their website and it looks a beautiful colour and I can see your dilemma. It has a grey-brown hue similar to F&B’s Mouses Back, well on my screen anyway! Were you able to view a kitchen, or at least a door, in it? Im not sure I would choose a kitchen just from a photo. Second photo is F&B’s Mouses Back.

Aqua would look amazing with a white kitchen, but I think an off white would go beautifully with midnight blue. Something like F&B All White. I think Slaked Lime by Little Green would also go nicely too. My sister has a charcoal-navy kitchen and she chose the palest of greys and it does look good. The last picture shows Slaked Lime with navy.

Thank you - il be honest i found buying a house easier! ive got a lot of health stuff going on and i need to get this done and dusted. i like the wood effect worktops but im not sure as the kitchen is north west facing and there is a conservatory attached to it which diminishes the light somewhat. there is just so much choice out there and in my 64 years all the houses I've lived in either came with the kitchen or in my new build where i am now, i had a few choices, not a few hundred! i think glass splashbacks are a bit too modern for me plus pricey i expect. so if you had to make a decision would you have wood effect or marble effect worktops and splashbacks ! today is decision day or i will give up and stuck with my existing kitchen lol .