Thanks for the reply, don't think I'm quit at that stage yet though. Was more looking for general ideas on where cooking/dining areas could be located and how to fit in the utility and loo. Hoping that others who have done similar projects could share ideas on how to get the best layout for the space.

I think if you have a 1m wide table and allow a metre each side to pull out chairs you are left with 1.6m of room width which in my opinion is insufficient for a full living area. So I offer an alternative

You have a lovely, huge space to work with- that’s terrific. Are the position and size of the 2 windows fixed? I’d suggest getting the ideal, functional kitchen design first and then considering window placement next.. it may be that a single large window suits the final design better. I would change the fridge position to get it into either side of the main kitchen run. Ideally it should have counter space immediately adjacent to it. Imagine yourself grabbing and pouring milk for cereal.. and immediately putting it back.. can you do it with nary a step? For your oven setup, consider whether you might want one (or even both) directly under your hob. It can make a huge difference to efficiency for the cook, especially if their meals tend to involve active use of both oven and hob. Imagine making spaghetti and meatballs with garlic bread… how easy is it to bake, grill, and stir the sauce without burning anything? Or having to squeeze past any kitchen visitors in your kitchen zone to check? ( And for draining the pasta, how far is it to the sink with boiling water?) I’d also pull the wine fridge out of the main kitchen run. It might be lovely to create a bar in the existing Aga area.

Hi Laura, That looks like it will be a fantastic addition of space to your home. I think that a change in levels or a low-level dividing wall is a great feature in an open plan space, as it gives clear division of spaces but allows transmission of natural light. This is sometimes called ‘broken plan’ and there are lots of examples and information on Houzz like this article:https://www.houzz.co.uk/magazine/how-to-design-a-broken-plan-space-stsetivw-vs~119315147 So by adding a railing or low height wall to separate the lounge and dining spaces, you could get views of your garden from the living room whilst still having somewhere to place your furniture up against. Its best to keep the ceiling level if you can and use a rooflight and glazing above the bifold to bring light all the way deep into the lounge space. And keep the steps to 1-2m wide to make the most of space either side of them. I would also recommend 2 other changes: reduce the size of the bifold to add more kitchen units with a window, and reduce the size of the utility to make the central space into something usable. Something like a library if you like to read, or a drinks bar if you like to entertain or record player and vinyl collection Please let me know what you think? And I wish you all the best with your extension project!! Phill