David Cameron calls for greater funding for dementia research as he reveals new job as president of Alzheimer’s charity Used example of HIV in the 1980s to call for dementia to become a subject of ‘open discussion’ in society David Cameron called for greater funding for dementia research today as he revealed he is to become the president of an Alzheimer’s charity. The former prime minister, who stood down after losing the EU referendum, said he was taking the position with Alzheimer’s Research UK.