I did watch this video to ensure everything was right. infact the remote was already automatically paired with the surround sound (i unpaired and re done manually to ensure all was ok).
The home button on the remote does not make the box wake up and/or send a signal to the device (tv/surround sound/receiver etc) to make the device automatically change source.
the only way I can do this, is to power down the virgin box, which in turn powers down the tv etc and then restart it all.
Any device, be it Xbox, PlayStation, Apple TV, even a chromecast, sends a signal upon pressing home/menu/standby etc to the tv to change the source, without having to make it all shut down.
the issue is the home button not triggering the tv/receiever etc to change on. And you HAVING to use the power button ok the virgin remote. Which if your box is not already off, means everything has to go off first. (Because you need the one power setting enabled).
Sorry if this is confusing or I have missed something, I sincerely appreciate the effort, I just can not believe virgin would have this like this.