I wanted to know how many CCTV cameras they have. We in the UK are a heavily monitored population (here's a frustratingly thin article with a few details, hinting at a rich data set that is not made available. (http://news.bbc.co.uk/1/hi/uk/8159141.stm) ) It's bizarre that her tax money (as a child she doesn't pay much, but she will pay VAT on a few items and her parents certainly pay taxes) is used to provide state surveillance and to prevent her photographic record of her dinners.
There are many reasons to prevent children taking phones and cameras to school. This reason is a really really stupid reason.
How wrong-headed it is to take active measures against a child who is showing an interest in writing; civics; nutrition; and so on.
EDIT: The father has appeared on BBC Radio 4's "Today" news programme. (about 7:20 for anyone 'listening again'.) He has said that the school has been very supportive, and that the decision was taken by the council. He sounds pretty balanced about it. We crush the joy of learning out of children.