Here are some links to other websites providing further information relevant to the management of multiple long term conditions:

NHS Choices

Patient

Healthtalk

Easy health

Healthwatch

National Voices

Patient Voice South

Age UK

Health in Aging

Johns Hopkins Medicine Caregiver resources

The Kings Fund

The Kings Fund report on medicines optimisation 

NICE guidelines on multimorbidity

NICE guidelines on multimorbidity (short version)

NHS England - Long term conditions/older people

NHS England - Get involved

NHS England - NHS citizen