Loneliness may be an important well-being indicator for people leaving homelessness (Padgett, 2007). Even when housed, people can continue to feel isolation associated with the stigma and marginalisation experienced while homeless (Bower et al., 2018), sometimes motiviating them to return to homeless social activities (e.g. substance use), jeopardising their tenancies (Bowpitt & Harding, 2009).Accurate loneliness measurement is vital among this group for clinical and research settings and a standardised measure of loneliness that can be used in homeless samples is desirable. Unfortunately, although researchers have developed measures investigating loneliness in this population (Rokach, 2005), they have rarely used standardised measures.Loneliness research has focussed on certain groups -mainstream or older populations (Hawkley & Cacioppo, 2010). However, populations may experience loneliness differently. For example, loneliness appears to be experienced differently in collectivist compared with individualistic cultures (Barretto et al., 2020). Loneliness is experienced in Borderline Personality Disorder as a deep-seated interpersonal distance and emptiness (Sagan, 2017) and among the elderly people as an 'ache' of lost meaningful social roles and sense of lived time as protracted and undifferentiated (Casey & Holmes, 1995).These differences suggest 'one size fits all' measures of loneliness may be inappropriate.