Looks like you Brits are at it again with the incredible inventions 
http://www.wired.co.uk/news/archive/2014-07/31/nasa-validates-impossible-space-drive
"Test results indicate that the RF resonant cavity thruster design, which is unique as an electric propulsion device, is producing a force that is not attributable to any classical electromagnetic phenomenon and therefore is potentially demonstrating an interaction with the quantum vacuum virtual plasma."
What he said..
http://www.wired.co.uk/news/archive/2014-07/31/nasa-validates-impossible-space-drive
"Test results indicate that the RF resonant cavity thruster design, which is unique as an electric propulsion device, is producing a force that is not attributable to any classical electromagnetic phenomenon and therefore is potentially demonstrating an interaction with the quantum vacuum virtual plasma."
What he said..