6.5m people identified themselves as carers in the last Census; this is roughly one in eight adults in the UK. The unpaid carer population is expected to grow to 9m over the next 20 years.
Triggle, N. (2014). The hidden army of carers. London: BBC Health News, June 10th 2014.
Brief statistics now appear on the Carers UK website. Possibly also of interest is the recent survey:
The state of caring 2014. London: Carers UK, May 2014.
A message to NHS staff from the Secretary of State for Health timed to coincide with Carers Week:
Jeremy Hunt: Message to NHS staff during Carers Week 2014: the Secretary of State pays tribute to all carers across the country, including NHS staff. London: Department of Health, June 12th 2014.