Who created the chicken tikka masala?

Chicken tikka masala is a South Asian dish based on Indian-style roast chicken chunks (chicken tikka) in a tomato, curry sauce. The cross-cultural popularity of the dish in the United Kingdom led former Labour foreign secretary Robin Cook to proclaim it as "Britain's true national dish". Indian dishes such as Murgh Makhani or Butter Chicken are similar in preparation and taste to Chicken tikka masala. In Pakistan, it is also known as Chicken Masala or Tandoori Chicken Masala.