The Healthy Start vouchers no longer cover the cost of a tin of formula, they did when my oldest 3 DC were little, you exchanged them at the HV clinic for the tins and paid nothing, yet with DS3, you have to use them in the supermarket.
Formula here roughly £8.99 a tin, Healthy Start vouchers are £6.20 a week for DC under 1yo. The week of their first birthday, they drop to £3.10 a week.
AND if you have a baby who is dairy allergic, you can't use the Healthy Start vouchers to lower the cost of Nutramigen. And my local NHS will only prescribe a MAXIMUM of 6 tins a month, usually only 4, I have to argue with the GP to get 6, and Nutramigen only comes in half-sized tins.
It's really expensive, too. For each tin over and above what is given on prescription, it now costs £14.28 for every 400g tin. If you are on benefits and are having to pay for that ( DS3 gets through 8-10 in a month, I have to use it in his cooking too), it gets very expensive.
It annoys me that I didn't choose for DS3 to be dairy, soy, nut allergic, he still has to use formula milk at 16mo, and I can't even get a discount of £3.10 a tin by using my Healthy Start vouchers! 