What does it mean to be indifferent in the UK?

References 

1. Department of Health (2001). Valuing people new strategy for learning disability in the 21st centuryHMSO London.
2. Lindsey M. Comprehensive health care services for people with learning disabilities. Advances for Psychiatric Treatment. 2002;8:138–148
3. Mencap (1998). Prescription for Change.
4. Mencap (2007). Death by indifference.
5. Michael, J. (2008). Healthcare for all: Independent inquiry into access to healthcare for people with learning disabilities.