Before the mental health platform formation, The ME association had put in its DHSC delivery plan proposal something like the dementia platform that was set up in 2014.
https://www.alzheimersresearchuk.org/news/dementias-research-platform-uk/The Dementias Research Platform UK (DPUK) is a £50 million investment, funded mainly by the Medical Research Council alongside six other partner companies. The aim is to speed up dementia research towards new treatments and preventions. The plans are big. Big ideas, large experiments and massive amounts of number crunching. But crucially, huge numbers of people. The DPUK will be the largest population study ever; two million people above the age of 50 lending a hand (and various biological samples along the way) to help researchers tackle key questions in dementia research