Both of these stools are adjustable and would look rather sleek with your design. Beautiful kitchen by the way. One is a bit over your desired budget but may be worth it? Both from Wayfair. https://www.wayfair.co.uk/Bar-Stools-l59-c1804848-O86128~Grey.html Shannon

I've ordered the stools now :) worst case scenario is that I don't like the stripe and I get them reupholstered, I can deal with that!

Hi Matt I would suggest to tile the full length of the wall with a glazed tile which would add some colour, warmth and texture to your amazing kitchen. I would be careful in choosing a fairly subtle colour that is not too bright. I have worked with these tiles on previous projects http://pyrolave-architecture.com/glazed-bricks-a-tiles and the results were amazing. Additionally they have good range of colours and can supply in any RAL colour.

I love that Idea @OnePlan (Concept planners) - I might steal it for ours, although it may be limited to seat cushions as we already have white stools.. hmmm food for thought! Would need to see if it would work with the other colours in the room... hmmmm...