"To date, the UK remains the only country to have the dubious honour of developing an orbital launch system and then dumping it."
That is utter bollocks. The USA made the Saturn V for the Apollo landings and then scrapped it. They can't even make one any more.
Then they went and made the very impressive and expensive Shuttle, which also got scrapped for reasons we all know.
So the UK is most definitely not the only country to have developed and scrapped an orbital launch system.