@minipie I could put the fridge freezer on the main run of the kitchen, but that would then reduce the work surface on that wall - and the work surface is sure to be small as it is. If I turn the island 90 degrees to be parallel to dining table then it would mean that neither the hob/oven/fridge/sink would be behind me. I would have to walk from the island across to the main run for everything...... not sure how practical that could be. And if I did do that then, I would have a nice view while working at the island but anyone sitting on stools would be looking at the staircase, which wouldnt be right. @Heather - the space is already 5 x 6 m almost - I dont think we need to add an extension. That should be enough space for a decent kitchen with dining table. I dont need any extra living space either as we do have 2 large lounges. Keep the suggestions coming, thanks!

Miriam Do you actually mean columns as in structural elements or do you mean decorative pilasters? The size of a column is dependant on the load it is carrying and if these are load bearing elements. I would consult an architect and an engineer. There are standard sizes but the choice is driven by the structural requirements. If they are pilasters. Then a starting point would be to talk to suppliers of the plaster replica's https://www.lassco.co.uk/a-pair-of-english-cast-plaster-pilasters or others. They should be able to give you some guidance on the choice and size modules. Hope this helps Best David

Obobble and Suzanne C, thanks for the comments. I think the idea of putting the shower and toilet along the right hand wall is a good idea. Do you think there would be room if I put the vanity unit parallel on the opposite left hand wall, rather than underneath the window? (Sorry I like the idea of having a mirror in front of me rather than the window obobble!) Also what do people think are comfortable dimensions for a spacious walk in shower? If I put the shower in the back right hand corner then I’m not tied so much by the width of the window I think as it won’t jut up next to it? Ie it could be wider that 76.5cm?

​I have a 1400 x 800 shower, was going for walk in but bathroom fitter advised against it. We have a sliding door, easy clean, expensive one. I am glad i didn't go for the walk in because honestly 1400 is too small. Why not go for 1600 with a walk in, or 1400 with sliding door. By the way the small gap can he easily sorted by your tilers. They'll make recommendations when they come n to quote. Such a common problem for them to solve. I'll try to attach a pic of my showerso hopefully you'll see that 1400 ight be too small for a walk in.