>>1272368>Runway to spaceSkylon is still in development. Reaction Engines has moved to focus on 2 other designs, a super sonic airliner, which might become just a business jet like Boom, and also some sort of smaller spaceplane, which can piggy-back on top of a larger aircraft, but then detach and then fly into space.
The Skylon will be runway to space as a "Single Stage to Orbit", but their plan is with SABRE engines, which condense atmospheric air to a liquid while flying like a plane, and then switch to cryogenic LOX when in the vacuum of space.
Space to runway is much simpler though. The USAF still operates the Boeing X-37 which is launched on a ULA Atlas V or a SpaceX Falcon 9 into some sort of LEO. We don't know the specifics, because it is a classified mission. We don't know what the spacecraft carries or what it does in space. All we know is that it spends several months in orbit, between 3-6 months before returning back.
Dream Chaser is still in development by the Sierra Nevada Corporation, SNC initally proposed the Dream Chaser to NASA and ESA. ESA were interested, but would only pay money if it was at a stage to be useable on the Ariane 5 for both crewed and uncrewed missions. Since Ariane 6 will start testing in 2020 and the first launches will start in 2021, it's possible that a crewed Dream Chaser for ESA missions might never happen. I'm not sure if the human rating of the Ariane 5 will transfer over to the Ariane 6, since the SRBs are different on the 6, althought the Vulcain 2 engine will be the same.
SNC is receiving money from NASA for both Commercial Resupply and Commercial Crew for the Dream Chaser. So far, the Dream Chaser has only proven its ability for atmospheric flight. ULA's funding for human rating the Atlas V for the Boeing Starliner has paid off, as now the launch abort systems for the Atlas V can be used for a Dream Chaser launch. SNC is tight lipped about progress though. It's possible it might be too little too late.
