As a result, the charity has had to make the difficult decision to cut £44 million in research funding - and this is likely to be just the beginning.
Dr Flint wants to help highlight the threat the funding gap poses to future breakthroughs for cancer patients in Sussex and across the UK.
The funding crisis is powerfully brought to life in a new TV appeal film. It shows a cancer patient on the verge of finding out whether her treatment has been successful, when the video pauses at the critical moment.
Dr Flint, who has a 10-strong team at Brighton, said her PhD students were devastated when they had to walk away from months of work in March.
She said: “People have been doing what they can from home – analysing and summarising their data.”
Dr Flint’s co-principal investigator, Professor Bhavik Patel, Professor of Clinical and Bioanalytical Chemistry and a bioanalytical chemist, said it was frustrating to have to close the labs when they were so close to a conclusion.
“It was a real kick in the stomach because we were in a period with our research where it was the most exciting it has ever been.
“Both our projects had a single experiment that we needed to complete to tip it over the edge.
“The really hard part is that we know what needs to be done and we’re so close we could touch it, but we can’t.”