Hi virgin media out of curiosity what type of port is the test port is on the Samsung v+ box. Do you use this port to reset the boxes back to factory settings. Do you use this port to install its operating system.
I think Virgin had a few things in the pipeline for the V+ boxes and Liberate platform in general but obviously development was stopped when TiVo came along. On the front panel of the Samsung V+ is an LED indicator that lights up "Multi TV" suggesting that some sort of multi-room streaming implementation was planned. In fact when mine went faulty a few years ago this was actually lit up for a few days before the box died. Wouldn't have known about it otherwise.