Amanda is known for her immaculate style and has even been dubbed the "Britain's Got Talent queen" by Cowell - the show's boss - but early into her fame, she found herself embroiled in scandal with her first husband, comedian Les Dennis.
Eventually when things calmed down in 2014, Neil finally said sorry to Les for the affair he had with his then-wife Amanda.
In 2000, Amanda cheated on Les with Neil, while starring in Happy Birthday Shakespeare on BBC.
Amanda has always spoken highly of Les and revealed that it was the "worst time of her life".
He said: "I feel sorry for how the situation was dealt with and I feel sorry for how emotional Les seemed to become.
