"The HDMI from the DVD/Surround will be transmitting the picture from the DVD/Surround to the TV. Does sound come out the TV speakers when you play a DVD, or is it only from the speakers connected to the DVD/Surround amp?"

Only through the dvd 5.1 speakers


"However, if you rarely use the TV's internal tuner (which is most likely either analogue ch1-5 or Freeview) and only watch Sky, then just connect the red+white RCA's from the Sky box to the DVD/Surround."

Assuming they are inputs on the dvd player? if so how to connect to the tv after being fed to the dvd?


"I take it the Sky is connected to the TV using Scart? If so then you will get audio through the TV speakers from the Sky box over the scart cable,"

Yes it is.


"Does that all make sense? "

Nope not one fookin bit lol