I'm sorry, but I have to disagree. The amount of Delay Repay is based on the ticket(s) held as well as in the journey being made. The OP was delayed during a journey for which he held a single ticket.
I'm sorry, but I have to disagree. The important factor here is that the consumer has booked a
return journey. The fact that the industry happened to choose to issue it as two separate single tickets has no real relevance; it can happen without warning and there is no material difference between a return journey for which two tickets for which two "single" portions are issued and a return journey for which tickets with "outward" and "return" portions are issued.
The way it works on the VTWC site is that you choose two singles, and if the two are the same and less than a month apart they turn into the respective return. So I can't think of any way in which anyone could be "fooled" in that manner.
The more you two try to defend the indefensible, the more encouraged I am to prove you both wrong. The more I look into it, the more convinced I am becoming that Virgin Trains would lose a legal case.
So, I search for a Railcard discounted ticket from Manchester to London departing around 9am and leaving around midday; I am presented with single options. It's made very clear througout the process that this is one return journey. It is not claimed to be two single journeys. Yet I am issued with two single tickets, regardless of whether or not the outward journey is before the time the Off Peak Return becomes valid.
If I search for an undiscounted ticket from Manchester to London departing around 9am and leaving around midday; I am aalso presented with single options. It's made very clear througout the process that this is one return journey. It is not claimed to be two single journeys. Yet I am issued with one return ticket, if I select the 0935 or later for the outward portion.
The passenger has no control over what is issued. I wouldn't say any "fooling" goes on as part of the booking process; any "fooling" is on the part of Virgin Trains if they refuse to pay appropriate compensation for a return journey because two singles were held. I am convinced it is unlawful for Virgin to be treating consumers differently based on things the consumer has no control over; a reasonable person would expect both the above journeys to be considered "return" journeys. Anyone who argues otherwise, as the saying goes,
can't see the wood for the trees.
Click on the thumbnails if you want to see screenshots: