Maughan et al. (2016) [10]	Isolation, frequent attenders to GP’s	Inclusion criteria: adults with a common mental health conditions (e.g. depression or anxiety), not under care of secondary mental health services, did not have a substance misuse disorder
Dayson et al. (2014) [29]	Non-clinical needs of those with complex long-term conditions, frequent users of primary care	Inclusion criteria not stated
Friedli et al. (2012) [30]	Money/debt, employment, housing support, drug and alcohol misuse, physical activity, condition management, social isolation, psychosocial and emotional needs, family and relationship problems	Inclusion criteria: poor mental wellbeing which is affected by social circumstances and/or mild to moderate depression and anxiety and/or long-term physical/mental health condition and/or frequent attenders in primary care. Exclusion criteria: experiencing acute episode of psychosis, primary diagnosis of drug or alcohol misuse.
Grayer et al. (2008) [31]	Psychosocial needs	Inclusion criteria: 18 years old or over with a psychosocial problem (e.g. depression, anxiety, social isolation, financial difficulties). Exclusion criteria: active suicidal ideation, current episode of acute psychosis or crisis, housebound, requiring specialist mental health service, already under care of secondary mental health service or social services.
Kimberlee et al. (2014) [9]	Depression and anxiety related primary needs. Other needs included reducing isolation, anger management, increasing physical activity, improving employment.	Not stated
Age Concern (2012) [32]	Social, emotional and practical needs	Inclusion criteria: “Older people” with mild to moderate depression or who were lonely or socially isolated.
Baines et al. (2015) [33]	Clients were “just dipping over” into needing further support	Inclusion criteria: Over 18 years old, had a recent change in circumstances e.g. bereavement, redundancy or diagnosis of a chronic condition like Diabetes, has a long-term condition. Exclusion criteria: had high risk level or acute mental health condition.
ERS Research and Consultancy (2014) [34]	NESTA—People Powered Health programme Complex problems. Ways to Wellness Long-term health conditions.	NESTA—People Powered Health programme Inclusion criteria: has long-term condition or has mental health needs greater than can be managed by organisations already delivering link work and who cannot access mental health services as they do not meet diagnostic criteria and/or initial assessment identifies they will not benefit from CBT. Ways to Wellness Not explicitly stated but programme was for people with long-term health conditions.