One of the most wonderful person I have ever been lucky to meet. Simon always made me feel valuable as a person and I can't express my gratitude enough. You will be missed but happy you won't move far from us :) #wonderfullperson

this wait is agonizing, because the results are life changing

Our ambassador David's about to take off down Sidney St #CambridgeBigWeekend Come and get a balloon! #angliabus

I was at the museum but was not chosen for a Q. #askattenborough Can the scientific community do more to convince global warming scepticals?