Don't consider myself at all naive but haven't been anywhere near a hospital for any urgent treatment in over 30 years. Rang 111 yesterday due to constant headaches for almost a week, was advised to attend local hospital [london]. Queue out the door, after 7 hours was seen by a doctor for appx 1 minute who said they will want to do blood tests and possibly an mri scan, was told blood tests could be a further 5 hours, a scan possibly a further 7 to 9 hours so in total basically 24 hours. I couldn't wait so told nurse I was leaving and will follow up with GP and a wealthy old friend has offered to pay the £300 for the mri scan which is lovely. I was stunned to see so many people sleeping on floor and who had been there for hours before me. Then a man went beserk and grabbed a fire extinguisher and smashed in the windows of the reception area, coffe machine and a door, police already on site as were with a chap in hancuffs.....awful. I did notice that many names were called and nobody responded so assume they just left without informing anyone, I felt informing them of my departure, was the least I could do so time isn't wasted on no shows etc.