As a children's library service manager in an inner London borough, several things struck me about the anti-Bookstart comments in this thread.
"Charity shops are a good source of quality children's books". Sometimes yes, often no. I've seen lots of dreadfully illustrated, written and bound books in charity shops. Clearly the people who dumped them had taste! Also, many parents simply don't know where to start to choose books. Bookstart selected good quality, age appropriate titles.
"Spend the money on libraries, not Bookstart". The "either or" argument is a recipe to end up with neither. If anyone really thinks the government will spend the saved money on libraries instead is very naive.
"Go to the library and borrow books instead". Fine words, but many parents don't think libraries are for them. They see them as places for the middle-class (who probably have superior attitudes and downers on things like Bookstart). Bookstart promotes library use and gets many of those suspicious families into libraries.
"Well off families don't need Bookstart and so is a waste of money". OK, let's throw the baby out with the bath water (or the book).
"I've found Bookstart bags in charity shops". You find all sorts of things in charity shops. Do you abandon something just because it's abused?
"Bookstart should be targetted at the poor or uneducated". Easier said than done. I should know, I deal with distribution Bookstart in my borough. To attempt to collate data about "the needy" (however you decide to define that) and then devise a targetted gifting mechanism would probably cost more than a universal gifting approach. Also, while some poor people do read with their children, many middle-class ones don't. It's not as straightforward as some obviously think it is.
If you're a parent who buys your child books, joins the library, reads with your child, is able to selects quality age-appropriate books, then well done! But if you're not, are you robbed of pointers in the right direction just to appease the smug, self-satisfied educated middle-classes whose real agenda is not improving educational standards or concern for the nation's economy but a desire to remain an elite?