If you put the tv on the wall behind the door, you're going to end up sitting with your back to the fireplace, which isn't very cosy. I would keep the tv in the present position, to the left of the fireplace, but if you budget allows, get a built in unit for it, with storage for dvds, etc. Find a small corner sofa that will fit nicely in the space, facing the tv and the fireplace. Consider rehanging the door in the opposite direction so that it doesn't swing towards the sofa. Then at the conservatory end, put a couple of nice armchairs - or a chair and a small two seater sofa - and add a built in bookcase on that side of the fireplace, and some floor lamps. This will be a cosy relaxing area. The tv will be visible from each seating area, but the fireplace will remain the focal point of the room.

I would put the door on the floor below so you maximise the space in this room. It will give better illusion of space as you won't have a partition wall where the current balustrade is. Also you may want to consider not having a window in the en suite and keeping the maximum levels of nature daylight into the room. If you were able to relocate it to where it says "c" you would have a bigger sense of space at the head of the stairs which would be more of a statement. Mimi x Http://mimi-jade.com

@kikamack, many thanks for your thoughts. My kitchen layout was just a quick one - it's not finalised but the fridge/freezer would go with the tall oven unit is and I would probably just have the oven underneath the hob instead for ease. We didn't want high wall units as we want to go for a more Industrial style and less kitchen looking. We are considering a peninsula depending on the outside door location though. Re the plan - we are looking to add perhaps an extra wc downstairs & making a wider hall, but, after having spent a full day/evening yesterday going through all different options ie kitchen in the dining room, we decided that we really prefer the lounge in that section as I have it on the plan with the larger bathroom. Main reasons being:- we don't have to remove the chimney breast, we still have access to all the storage space under the stairs (not shown on the pic) and it means we can have 2 sides of windows/doors at the back if the dining table is there (which we couldn't if it was the living area due to needing space for a log burner and tv wall) which will overlook a wrap around garden. We have an entire house to pretty much rebuild (needs a new roof, upstairs all re-doing as not insulated and a new bathroom/dressing room) plus gardens to landscape and the outbuilding renovating to use as a home office/granny flat. Phew. So we need to do the least disruptive amount of work to gain the best plan for us. I quite like the kitchen idea of in the dining space but my husband hates it and he rarely hates things so I don't want to push him on it

Just reading the comments and suggestions on here shows the capacity for lots of variations possible for a design in this size of space. Have you considered investing some time working with one designer - who you can work with to produce a layout that ticks your boxes and then shopping around with the finished plans - (this is the kind of service we provide ) it may be a bit less confusing than several people ‘having a go ‘ - although it’s always great to get others opinions on Houzz, and of course it’s lovely that they are offering you this help at no cost. But might be worth considering, as you will be living with the results for a long time! (If you click on my name or icon it will take you to my pro page - with some examples of past projects and some reviews from some of our clients.)