The candy Starburst was released in the United Kingdom in what year?

Starburst (originally known as Opal Fruits) is the brand name of a box-shaped, fruit-flavoured soft taffy candy manufactured by The Wrigley Company, which today is a subsidiary of Mars, Incorporated. Starburst has many different varieties, such as Tropical, Sour, FaveREDs, Watermelon, Very Berry, Superfruit, Summer Blast and Original.

It was introduced in the UK in 1960, named Opal Fruits. Produced at their factory in Slough, Berkshire, the four original flavours were strawberry, lemon, orange and lime. Opal Fruits were introduced in the United States in 1967 as M&M's Fruit Chewies and later as Starburst. While the etymology of the name Starburst isn't certain, it was probably an attempt to express the burst of flavour at each bite, and draw attention while space interest was at its peak during the Space Race. Originally, Starburst came in the same flavours as Opal Fruits, though the lime flavour was replaced by cherry in the US in the early 1980s. Subsequently, its first variant, "Sunshine Flavors", was released, and was later renamed "Tropical Opal Fruits". In Europe, the lemon and lime flavours were combined to become a singular "Lemon and lime" flavour to make room for a blackcurrant flavour.

Starburst in the UK is vegetarian, its packaging and website clearly stating "Suitable for Vegetarians", and also does not contain any artificial colours or flavours. In the US, Starburst contains non-vegan gelatin in its ingredients.