The Invictus project is leveraging tech that the now-defunct British company Reaction Engines developed for a huge space ...

Pioneering propulsion technologies developed by failed UK firm Reaction Engines could live on, with the sale of its assets to a preferred bidder now seemingly in its final stages, the insolvency ...

Standing up Rocket Report: SpaceX’s 500th Falcon launch; why did UK’s Reaction Engines fail? SpaceX's rockets make a lot more noise, but the machinations of Texas' newest city are underway.

I doubt that Reaction Engines could ever have made this work, either technically or commercially. Such a spaceplane would be very flexible and would require very little infrastructure.