If you receive any of these benefits then you may be entitled to Free School Meals:
Universal Credit provided they have an annual net earned income not exceeding £7,400 (£616.67 per month)
Income Support
Income-based Jobseeker's Allowance
Income-related Employment and Support Allowance
Support under Part 6 of the Immigration and Asylum Act 1999
The guarantee element of Pension Credit
Child Tax Credit, provided you are not also entitled to Working Tax Credit and have an annual gross income of no more than £16,190, as assessed by HMRC
Working Tax Credit run-on-paid for 4 weeks after you stop qualifying for Working Tax