At the time of their deaths details emerged of Lance Corporal Liam Tasker and Theo's incredible bond. This is the full report by Paul Davies from March 2011.
More top news
Sir Bernard Hogan-Howe said a judge-led review into how the Met Police handled allegations of past sex abuse is "the right thing to do".
After his son took his own life, grieving father Dick Moore began campaigning for mental health awareness. Here, he shares his advice.
The 13-year-old died in hospital after being hit in the back of the head by a bullet when his cousin fell of a hoverboard.