If you’re pregnant or have at least one child under four years, and you receive Income Support, Jobseeker’s Allowance, or Child Tax Credit with an income below £15,575 (2008–2009 rates), you’re eligible for Healthy Start vouchers. You’re also eligible if you're pregnant and under 18.
Healthy Start vouchers can be exchanged for cow’s milk, fresh fruit and vegetables, or infant formula worth £3 per week (£6 for children under 1 year old). You can also get free vitamins.
Further information is available at http://www.healthystart.nhs.uk