This is financial support given to those over the age of 16 if that person does not have an income nor savings over a certain amount, and have no other means of support (i.e no working parents, spouses, guardians).
Income Support is an income-related benefit in the United Kingdom for people who are on a low income. Claimants of Income Support are entitled to certain other benefits, for example, Housing Benefit, Council Tax Benefit and help with health costs. A person with savings over £16,000 cannot get Income Support and savings over £6,000 affect how much Income Support can be received.