More than 525,000 people with dementia in the UK are living at home. The estimated figure, provided by the Alzheimer's Society, represents a significant proportion of the 850,000 people thought to be living with the condition overall.
This is the case for Wendy, Keith and Christopher. Having had Alzheimer's disease - the most common form of dementia - for different lengths of time, their stories depict how the condition can progress over the first seven years.