my sister and partners school age brother have both been approached and mugged of their money and phones in peckham rye park one at gunpoint (real or fake doesnt matter) and I know through intellegence that groups of boys go on a daily basis looking for people to rob. Especially after school as a lot of teenagers congregate there after school. You have to be very vigilant as these young boys do not care and have respect for anyone including adults nowadays. make your children aware that this is common and tell them to keep their valuables as safe as they can.It a unpredictable world and youngsters have no boundaries.
