Dementia is a major public health problem in the developed world, and has become the focus for UK government and NHS initiatives in recent years. There are many different types of dementia, with Alzheimer’s disease being the most common and best known, but other main types include dementia with Lewy bodies and vascular dementia. The risk of developing dementia is also raised in a number of other conditions, including Parkinson’s disease, multiple sclerosis and motor neuron disease (Alzheimer’s Society 2015). In the UK approximately two-thirds of people with dementia live in private households and one-third in some form of institutional care setting (Matthews et al. 2013).