Producers behind West End musical Charlie And The Chocolate Factory have changed the show's script after an audience member complained about a scene which mentions diabetes.

Sam Mendes' London stage show, based on the 1964 children's book by British author Roald Dahl, features a scene in which one of the characters suggests eating too much chocolate can cause the insulin-related disorder.

Nathalie Bristow lodged an official complaint after seeing the show with her eight-year-old daughter, who suffers from type one

diabetes which is not linked to lifestyle factors, and show bosses have now agreed to remove the offending line.

Producer Caro Newling says, "I am so sorry that it had such a negative effect. That was never the intention and it was meant to be entirely humorous... But why upset anyone when you don't have to? As a result, we have amended the script to drop the reference to diabetes and have replaced it with an alternative comment."

Michael Connellan, of diabetes charity Jdrf, adds, "It's frustrating when differences between type one and type two are ignored in references to 'diabetes'. Greater recognition of the differences between them is something that Jdrf constantly strives for... Thank you to Caro Newling. It is important that others continue to follow suit."