As
@some bloke has helpfully pointed out above, even if you delve into the terms and conditions of the Railcard - those same terms that allegedly entitle the train companies, on paper, to charge passengers extortionate penalties for saving them money - the consequences of failing to have both passengers present is far from clear.
A charge of £150 can in no way be said to constitute a "genuine pre-estimate of loss", which is ordinarily all that is recoverable when one party breaches a contract. It must therefore be justified as a sum in liquidated damages, i.e. an agreed contractual penalty. Contractual penalties, certainly in the business-to-consumer world, are limited in their permissibility and enforceability, with
ParkingEye v Beavis being the (current) leading case in what is enforceable and what is not. I encourage everyone who is interested in this matter to read the judgment in full
here, or at the very least the press summary
here.
For one, contractual penalties must have a legitimate justification for existing - for example in the ParkingEye case it was to disincentivise use of a retail car park by commuters (who would then lead to fewer spaces being available for legitimate shoppers). No such justification can be said to apply to the present case - it is a case of benefitting the train company by one passenger not turning up.
But even if we assume the first hurdle is somehow passed, the second test is whether the contractual penalty was made amply clear to the consumer. It must be specifically spelled out and not just in some small print where no-one would expect it. (This is also the case through Lord Denning's so-called "Red Hand Rule"). When, exactly, when buying a ticket will any customer be told the penalty, in pounds and pence, for travelling without the other passenger? In my experience, and I am pretty sure in that of most forum members and members of the public, you will never be told this. It is all a far cry from the signage ParkingEye used in the aforementioned case, which can be viewed
here.
I struggle to see how a contractual penalty of £150 can therefore be held as enforceable, because it flagrantly fails the key two tests for enforceability. The railway really needs to have a long, hard think about what they are going to do in order to make their penalties enforceable (i.e. legitimise their application, and inform/warn passengers of them when buying) - or whether they are going to drop them.
The fact that an argument such as this has not been used in the specific context of railways (or at least not that I am aware of) does not mean it is not valid. If you follow the argument I have given it is an inescapable conclusion that the £150 charge made by VTWC in this case is unenforceable, and that all such similar charges also are. Rejecting this conclusion out of hand is, in my view, a sign that one is unwilling to even
entertain the possibility that the institution of "the railway" could ever lie in the wrong.