People across the UK could be showing red flags of a serious medical condition - but may never see the signs themselves. Sleep apnoea tends to set off alarm bells when the person is in a state of deep sleep. Dr Xand van Tulleken, the resident doctor regularly appearing on BBC's Morning Live , claimed that millions could have sleep apnoea and not even know it. However, there are ways to get the evidence you need to get your doctor to look into the condition. Many people are thought to have