FULL TITLE: Terminally sick children have been secretly given deadly overdoses by British doctors in illegal mercy killings, claims retired GP British doctors have secretly killed terminally sick children by giving them 'huge' overdoses of painkillers, it was claimed yesterday. Hours after Belgium became the first country in the world to allow the euthanasia of children, a retired GP suggested it was already happening, informally, in Britain. Dr Michael Irwin told an LBC Radio debate: 'It has happened in this country, very quietly. I know of one or two children over the last few years.'