Hilary worked for me during the first lockdown, doing vital work on the security of the NHS App. Her work saved lives. I'm so sorry to hear she has lost hers. I will always remember how unflappable she was, how dedicated and how stoic. A wonderful person to work with, I was honoured and humbled by her and could not have done my job without her emotional and practical support. To Hilary's family: I am so sorry for your loss. I can only imagine what you feel. She was a wonderful woman and a life saver.