SMS, its like mounting on a wall, but the back wall of the cabinet provides a second mounting base, though 50inch is about the limit in wt. for theses cabinets.
I had the same problem, and looked into display stands like this http://www.cribideas.com/product-B-Tech ... 0-985.html
There are a few floor stands in Singapore but dog ugly. The extended feet on the floor are trip hazzards and if you order from The UK or US they are very heavy and expensive to ship over.
I re-read my TA and there is a clause allowing us to make holes in walls for pictures and TV mounts so in the end stuck the TV on the wall and solve the problem of the wires with this http://shop.iconceal.tv/
which the guy posted to Singapore.
Alternatively you can get a sheet of Ply/mdf and cover it in a veneer or fabric lean it against the wall, mount the 6 bolts for the TV bracket to the timber and then use 2 Rawl type bolts to fix it to the wall. You can say the two holes in the wall are for a heavy picture.