How many devices can use to watch Netflix?

leapyear

I have Netflix through Sky as the Ultimate TV add on - this is HD and can watch Netflix on 2 devices.
My question: is that 2 registered devices or 2 devices streaming at the same time? I wish to add a 3rd device (TV in bedroom).

DullGreyGuy

If you buy directly from Netflix then the cap is the number of concurrent viewings not the number of devices registered... would be surprised if buying from Sky changed that.

wild666

When I had Netflix one device £5.99 I was logged in on 3 devices but only used one device at a time whether it was the TV or one of the desktop PC's in the living room or bedroom. 

flashg67

I have several devices - 2 tvs, tablets, phones,  all logged in but can only watch on any 2 at a time