Couple weeks back, dont know if you noticed but a leaked document from the Home Office stated it wanted to look into "monitoring" children as young as three for criminal "behaviour".
How they intend to do this I dont know, but there are many avenues they could take, particularly with programs like "sure start" which tend to be in financially depressed areas and areas of high crime. Beware people, beware.
We are already on the road to the I.D, cards, kids as young as eight are going to be I.D'd for the G8 summit, and tags for school children is well established already, in the U.S.
If your child does not "cooperate" or follow directions by the age of three, "they" may be watching him/her.