U.K Public funds

When you are going to apply for a student, visitor, tourist visa, you will read about certain U.K Visa instructions, there you will come across Public Funds and it will also say that you can't use public funds or support while you are in U.K with a UK Visa. And if you want to use them it is illegal and you may be charged with legal laws also may be banned from obtaining a visa later.

If you are a residence permit holder and you have a question, contact the relevant authorities like Department for Work and Pensions.
Here are some of the Public Funds. (Theses are available for UK citizens with low income. Also, housing support.)

Income-based jobseeker's allowance;
Income support;
Child tax credit;
Working tax credit;
A social fund payment;
Child benefit;
Housing benefit;
Council tax benefit;
State pension credit;
Attendance allowance;
Severe disablement allowance;
carer's allowance;
Disability living allowance;
An allocation of local authority housing; and Local authority, homelessness assistance.
Contribution-based jobseeker's allowance;
Incapacity benefit;
Retirement pension;
Widow's benefit and bereavement benefit;
Guardian's allowance; and Statutory maternity pay.