Conservative shadow Treasury minister Gareth Davies accused Labour of copying and pasting announcements made by the Conservative government".
Since then she's been reflecting "on an unfinished mission and the technology's potential".But her personal pride remains strong. "It was British engineering at its best and it's important for people to hold their heads up high."
Her boss Adam Dissel, president of Reaction Engines, ran the US arm of the business. He laments the unsuccessful struggle to wrest more funds from big names in aerospace."The technology consistently worked and was fairly mature. But some of our strategic investors weren't excited enough to put more money in and that put others off."The main investors were Boeing, BAE Systems and Roll-Royce. He feels they could have done more to give the wider investment community confidence in Reaction Engines.
It would have avoided a lot of pain."My team had put heart and soul into the company and we had a good cry. "
Did they really shed tears? "Absolutely, I had my tears at our final meeting where we joined hands and stood up. I said 'We still did great, take a bow."
What lessons can we draw for other high-tech ventures? "You definitely have no choice but to be optimistic," says Mr Dissel."She was the matron and they were the boys of the school," Ms Murray said.
"Trying to control Motörhead was very interesting. I think she gave up on that one - particularly when my future stepfather, Fritz, was producing them and invited all these Hell's Angels down to record motorbike exhausts for a certain track."Although Ms Murray's experiences inspired her memoir, which is peppered with her mother's Rockfield recipes, she also believes her mother was the muse for one particular hit song written by Freddie Mercury, with clues in the lyrics.
"Killer Queen, I think, is written about my mother," she said."There are all the other theories but... 'Talked just like a baroness', 'the pretty cabinet' - she always drank Moët & Chandon. I think it is [about] my mother.