To change to cavity doors you will need to remove the wall each side of the doors to accommodate the cavity housing. Normal sliding doors would make a difference but the problem with them is they never stay totally closed and they do become quite noisy and annoying. This problem also applies to double cavity doors. The other option is to use bi-fold doors, they won't intrude into the room as much. Do you really need two doors there at all and is the glass above the doorway necessary? My personal preference would be to fill it all in and just have the one door to the room. You could even re-use one of your doors.

I bought a Mitsubishi 655L multi drawer fridge.... absolutely fantastic, had it nearly 12 months. I spent months researching as its my first fridge in over 20+ years, I wanted to get my choice right. It's so quiet. 5 year warranty on parts and labour. Was the only brand I could find that had the least, read hardly any, negative reviews. Not cheap, made in Japan but wrangled a good deal. They are taller and deeper than most fridges but not wider, an issue affecting people relocating these days. They do make a few different styles so check them out.

just look up a window manufacture anyone of them will be able to make that and install it and you need a plasterer doesn't anyone use yellow pages anymore ,i know that houzz has suggestions but no one has come forward

Amanda you have a number of options depending on how much you want to spend: 1) Sell them on ebay and use the money to offset some of the substantial cost of new doors. They were quite expensive doors when new so somebody on a tight budget would love to use them. 2) Reglaze them all in a glass that you do like. Bevelled edge glass looks stunning in French doors, but it is really expensive. Reglazing them is a long term option as it is labour intensive with 10 panes of glass per door, so is expensive, and would probably cost more than getting new doors installed. Although clear glazing reduces visual privacy between rooms. 3) Paint them all, to conceal the glass, so they look like a panelled door. This will destroy the resale value, so when you do replace them all you will need to chuck them in all in a skip. 4) Check that the milkiness of the glass is actually in the glass, and not an applied obscure film. If it is applied then remove the privacy film and clean. 5) Get a craftsman to apply a layer of plywood to both sides to cover the whole door so they look like generic, flush panel doors, then repaint. You will need new door handles if you do this as the new doors will be thicker, and your existing door furniture won't cope. I actually don't mind them too much and I have a few similar ones on my own place. They are great for borrowing light from adjacent rooms, but maintaining privacy. If I were you I would live with them for a while before you decide to do anything drastic and irreversible. Best of luck Dr Retro of Dr Retro House Calls