I really like the suggestion Modern feature walls. Combined with some greenery inside and out as suggested by chookchook2 , you can start to soften the 'boxy' look of the space which is now reinforced by the line shape and form of the couch you introduced in the updated image. If it is a breakout or meeting room could I suggest, budget permitting, some form of window treatment. Some simple and relatively cheap e-screens would add a degree of privacy, but more importantly remove potentially annoying distractions from outside; important if you are using the room both for work that requires concentration' .. or alternatively, impromptu meetings with others that may be held in the room. I do like the green, but the photo projects a rather drab uninteresting interior despite your efforts thus far.(imho). I think making a call to Modern feature walls should be on your call list. Something has to be done with that ceiling which I find not only distracting but is actively working against your attempts at creating a really inviting space that people will want to break into. I can a hint of a table off to the right in front of the window. The best breakout spaces I've used have the facility to informally and casually sit across a table with sufficient desk or table space to spread drawings, images and presentation ideas. .. It just doesn't work as well if you and a colleague(s) are forced to sit or stand along one side of a table with the yard providing tempting distractions when the focus should be on communication and collaboration. Mounting the TV and raising it would open the room up further and likely break up the 'box-iness' further. .. A bit beyond my field (Window Treatments) ... but you did ask. lol.

After I had finished my Archi Masters I was working for an architecture firm who also did a small amount of work for a volume builder. They were actually a pretty good quality builder and at least got the orientation of their 'pre-designed' plans correct. We had the ability to make minor changes to every job and it pained me to see so many simple to implement passive options not being incorporated. Had most of their clients known that they would be saving MONEY over the longterm by making a few minor changes to suit their site, they all would have done it. The problem is unless someone can sell this idea to them as a financial/lifestyle choice, many just think it is about saving the world. It is a no-brainer if you have in interest in it, but for those who don't know, there is no-one there selling it to them, especially on the lower end of the market.

lucky you! your water tank is below ground. I have to look at my 20,000 litre tank outside my kitchen window. It sits on a concrete plinth so I can't even plant around it. I'm too terrified to grow creeping fig on it incase it affects the integrity of the tank. At the moment it has wisteria draping over it, looks lovely in spring but deciduous and it's now becoming too invasive so need to get rid of it.. I also have star jasmine approaching from an arch beside - can't wait for it to take over the tank.. I love all the decorative features suggested but I reckon something like star jasmine might work with some other landscaping features to the side: bench, rock, more plants. The beauty of star jasmine is that it doesn't root, will drape over and can be pulled aside. Every couple of years I put the blower over the top of my water tank it to make sure the leaves don't mulch to create soil on top.

Thank you, you cant see the the trees I have in the photos due to winter but I have 12 trees already in my front yard. ( 7 silver birch, 1 mop top 2 weepings, 1 red maple and a another) I do love the hedging. I was thinking something like the below photo with the same path going to my front door but placing the same purple plants around the sides that I have in my 3rd photo . I would like to use edging do I place some along the 3rd photo. I love the above photo with the trees and hedge layering, I could do that along the front fence. What do you think ? I don't really know plant names so I am saying sorry in advance