I would highly recommend these films by Dr Peter Gordon, a psychiatrist in Scotland
References I used are here
UK National Screening Committee, The UK NSC policy on Alzheimer’s Disease screening in adults http://www.screening.nhs.uk/alzheimers
Screening for Dementia in Primary Care: A Summary of the Evidence for the US Preventive Services Task Force Ann Intern Med 2003;138: 927–937.
Screening for mild cognitive impairment: a systematic review, Lonie, Tierney, Ebmeier International Journal of Geriatric Psychiatry
This was a recent joint letter to the BMJ
Open letter to the Prime Minister and the Chief Medical Officer Regarding Proposals to Introduce Screening for Dementia BMJ, Rapid Response,14/12/12