Some time ago I noticed that many films broadcast on HD Freeview are not in surround sound, though they ought to be. An example is Quantum of Solace. Surely this was made with at least a 5.1 soundtrack, yet on HD UHF only two or three front channels are available, though the envelope is (as always) 5.1. In contrast to this, all the Harry Potter films are actually broadcast in full 5.1 surround, but these seem to be an exception. In my experience, most films made in surround are broadcast in either 2-channel stereo or at best 3 channels and this seems to be the case with all three HD broadcasters (TV1, TV2, TV3). Can someone tell me why this is so?