yes the fireplace is going to be replaced for another gas unit but a more modern type that can we recess a 3rd of the way up the wall if you know what I mean? nice glass panel. we have debated on wallpapering the fireplace and the darker grey behind the tv is a nice touch. did not think of the use of a mirror! maybe mount that to the chimney above the fireplace? or the wall on the right as you walk in opposite the window? I am installing 2 small spot lights recessed into the floor either side of the fireplace to make it more of a feature. separately switched from the ceiling spots. We've also had an idea of maybe going for a light white/grey grainy laminate floor or wood floor. yes the floorboards are in good condition! But prefer going over them for noise pollution etc. very echoey inside the room. thanks for your help... any other ideas and help greatly appreciated

I hope you're going to knock out the fireplace and find out what's behind it, be a shame not to at this stage! The lounge is quite small and you may want to re-think the l-Shaped Sofa as it will dominate the room. Why not go for a smaller sofa with a footstool that can act as a coffee table, there are loads about and Made.com is great for choice on the Footstool / Ottoman front. Put the same type of cabinet in each alcove, paint the fireplace a feature colour with a gorgeous mirror, add a plush rug and you're away !

You could add a nice mustard/yellow colour in with soft furnishings, cushions etc to compliment the grey/white, a large rug could help with the floorboards if you did fancy keeping them? Hope this helps. I'm just midway through living room project too, so I'll probably have lots of questions for here too soon!

You could hang a mirror in either place, opposite the window will maximise light. If you go for something large and rectangular hung landscape it will make the ŵalls seem longer whereas portrait will make the ceiling feel higher. Re the floor it will Echo until you have fabric, plants, books etc. I agree with Lynette re a rug but I would keep it in a similar tine to the floor to avoid making the floor space seem smaller. I would just be a little hesitant about the floor lights as if you want to change in the future you have the holes to deal with!

If it is not to late to reconsider the L-shaped sofa you might want to consider a sofa and chair instead. Use masking tape on the floor to get an idea of size.
Raising your gas fire will likely mean building work and replastering so you might prefer some if the excellent LED flame effect electric fires- you will find them in the large DIY stores and they look great.
I have lights recessed into my floor too and l think they look great- beware TV glare- consider if they would have more impact along the wall on the right as you enter the room.
I think your colour scheme sounds lovely.
Consider full length curtains on a wide pole to make the room less echoey. A rug on the floorboards would also help.

we debated on taking the chimney out completely but seeing as it is a shared stack and we'd need a 3rd party wall agreement it's more hassle than its worth. So going to keep it and make it a feature! I'm a tradesman anyway but my line of work is as an electrician. Will be blocking the lower half of the fireplace up and getting it replastered for sure. We've also installed some 5 amp sockets in the corners for table lamps to add to some mood lighting. Will have a think about the L Shape now as a few of you have highlighted it. Thanks again for all your help!