UK Skylon spaceplane passes key review | BBC, 24 May 2011

A revolutionary UK spaceplane concept has been boosted by the conclusions of an important technical review.
The proposed Skylon vehicle would do the job of a big rocket but operate like an airliner, taking off and landing at a conventional runway.
The European Space Agency's propulsion experts have assessed the details of the concept and found no showstoppers.
They want the next phase of development to include a ground demonstration of its key innovation - its Sabre engine.