The TV could still go in the 1m nook... we've got ours on a swivel bracket by our back door and so can watch it whilst we're in the kitchen but then come the summer, the TV swivels and we can watch it from the patio so it would work in this setup for viewing when cooking! You could put a corner-style sofa with a chaise long edge, this latter part jutting out across the window (from what I can make out it's windows to the edges and doors to the centre... correct?). Opt for a smaller table which is extendable so it doesn't take up too much space but can accommodate more bodies when required.

Hello! I personally prefer the graphite colour! I agree with you, light blue would be too washed out. Then, I would add colourful cushions and a beige rug with fun patterns! Here's one from Ikea! X

Check list for kitchen planning may help. Planning a Fitted Kitchens Step 1: Getting Started Designing the most important room in your home requires careful planning. So, before you do anything else there are some key questions to ask yourself. As you do so keep a record of your ideas so you can refer back to them as your project progresses. Step 2: How and when you want to use the space What do you and don’t like about your existing kitchen. What really works for you in the current kitchen layout and what frustrates you? The negatives are just as important as the positives as they can help you form a clear idea of what you do or don’t need in your new fitted kitchen. Step 3: Key areas of the kitchen There are four vital zones that will create a natural and efficient flow to your kitchen design; cooking, food preparation, sink and storage. However, increasingly kitchens are used for all types of activity. Do you need a room that can cope with the rigours of a busy family? Are you going to dine in your kitchen? If so, plan enough room for a dining table, breakfast bar or island is a great place to congregate. You may be a keen cook and if your cooking for a large family a range cooker may figure in your plans along with plenty of worktop space. You may want turn your kitchen into a open-plan design in which case a area to relax, and room for a sofa and TV may be important. Ultimately, it’s your kitchen, and the most important thing is how you and your family are going to use the space. Design the space and features (must have items) around the activities that will take place in your kitchen, and most of all ensure you match your kitchen to your lifestyle. Step 4: Finer details As you become clear on the demands you will be placing on your new kitchen make a wish-list of your preferred products and materials. From a practical perspective consider what you will require from you appliances, worktops, storage solutions and sink and tap. You may already have a look in mind of the kitchen in terms of colour, style and finish, but it’s a great idea to gather ideas from magazines or websites. Enjoy creating a scrap-book with cuttings of furniture, flooring, taps, even paint finishes, crockery or vases- anything that inspires you. Even just images with right ‘feel’. Step 5: Budget With a kitchen the cost of key elements such as appliances, units and worktops can vary dramatically. For instance, appliances may account for a considerable percentage of the total cost of the kitchen, however if branded top-end ovens, hobs and extractors are specified this percentage can escalate dramatically to become the most expensive element of the project. Similarly the choice of worktops materials and door material may increase the budget substantially. There may be areas of the project where you may have to be prepared to consider a compromise to stay within your budget. Step 6: Layout As a rule of thumb this will be dictated by the existing dimensions of you room, or you may be lucky enough to be planning to extend. If you are extending you amy wish to consider an open-plan kitchen to seamlessly link through to the living area. Whatever the shape there are clever design options that will ensure you can make the most of the space available to you. Even in a tight space a clever designer can still work miracles.

Good morning Hazel, Here's a link to a guide on small extensions under permitted development, if you haven't already looked at. https://interactive.planningportal.co.uk/mini-guide/extensions-single-storey/0 Once you have more idea on the construction of the extension and the exact dimensions, you'll be able to properly assess the internal space you have. You are correct in saying that it wouldn't be ideal to have to walk through the living space into the extension for the dining room. The proposed extension itself may not be ideal for a living/family area once a sofa and TV are in, as this won't leave much space for an external bi-fold/sliding door. Another option to explore is moving the kitchen to the left and having the living/family room to the right hand side (where the kitchen is currently situated). This will then mean the extension will hold the dining space.