Grant's new smell of success is now available in World Duty Free at London's Heathrow Airport, and the actor is already planning a follow-up, called Jack's Covent Garden, this summer (15).

He tells, "I have been led by my nose all my life and compulsively sniffed everything in sight, from food to flowers, flesh, fabric, car bonnets, furniture and everything else in between.

"I tried to make perfume from gardenia and rose petals, boiled in sugar water and stored in jam jars, when I was growing up, and finally, four decades later, created Jack. A unisex combination of all my favourite ingredients, including lime, mandarin, pepper, nutmeg, clove, vetiver, tobacco, musk and frankincense, Jack is my signature in scent."