Kerry Daynes, a Manchester-based consultant forensic psychologist explained the characteristics of Narcissistic Personality Disorder sufferers:
"People who have NPD have an over-inflated ego.
They are very grandiose and have a very inflated sense of themselves.
They feel they are very important and are superior to other people.
"...for these people it is out of control - it has gone off the scale."
A fitting description, no less, of just about every single one of this unruly bunch of characters.