Ah, the Voyagers! One of the few trains which are actually worse than FGW HST's. Again before I retired, I used these to travel from Reading to Manchester and back about 3 or 4 times a year, probably the most uncomfortable, noisy, and totally inadequate at 5 coaches long, long distance trains anywhere in Europe, let alone the UK.
However it appears that it may not be wholly the fault of the Train Operating Companies, in fact far from it. Since my first reply I have talked to a friend of mine who's hobby is railways, not on the number collecting level, but in their operation etc. He has told me that far from the private system we think we have in the UK, it is very much micro managed by the Department of Transport, who dictate what trains are run at what times, what stops are to be made, what stock can be used and when it can be replaced. Also they set the minimum price to be paid for the franchises, which has a direct bearing on the prices changed by the operating companies. To ensure that their involvement is kept hidden so that the train operators get the blame, they employ a large number of highly paid PR people who's job it is to spread misinformation about the true situation. Before anyone claims that he is a rabid right winger, he isn't, just someone who like the truth.