Hi, Here are some alternative plans you could consider. The first plan makes use of the extension as a kitchen diner where I'd have the kitchen to the right with a large window and to the left some bifold/french doors to flood the dining and snug area with light. And the old living space can be made into a snug; this creates an l-shaped room which gives you the semi open plan you would like. I'd split the existing kitchen into two if possible to create a larder and utility. The only issue with this layout is having to walk through the snug to get to the kitchen. The alternative then, would be to have the kitchen where the living space is and have the dining and living areas in the extension. This allows you to enjoy the views whilst dining/socialising. If you'd prefer not to split the existing kitchen, you can have a utility at the back end of the existing kitchen and a WC /shower to the front or a full utility... Good luck and all the best with your project.

Something like this might feel more cohesive - with all the cooking and food in one area and eating in another ...

I think it will be fine although you won’t be ironing in there! Could you change the entrance door to open the other way or even a bifold door? If you stack the machines behind a door, you could have narrow shelves on the back of the door (leaving enough room for the washer/dryer doors to open fully and have a shelf over the top for your laundry basket. Alternatively have narrow storage to the side for your detergent etc. A pulley maid would take advantage of the ceiling height and if you need more drying space there are slim wall fix ones around. I would add heating and an extractor too

Hi Tilly, I wanted to draw attention to the living room sofa's vicinity to the bi-fold. You'll be doing a side-shuffle to access the handle to open it up. An additional comment is the side access to your utility space, from the seating area. It is a design and navigational flow detail that may seem superfluous but if you have the space in the utility room to revise this, I would suggest to have access through the kitchen i.e a full length kitchen cabinet that opens to reveal access to the utility room. All the best on your project. Faten from londonfatcat.com