Iconic chocolate brand Cadbury today launches its first-ever festive TV ad campaign, after turning an entire London street the colour purple.

The eight-week campaign, launching with a 60-second ad that will run in shows including Coronation Street and The X Factor, is part of a huge seasonal investment by owner Mondelez International, which also includes new packaging designs for its Cadbury Dairy Milk bar.

In the ad local families are seen waking one by one and discovering their neighbourhood ready to be unwrapped. Cadbury says the story “aims to evoke the magic and wonder of the season, as families ‘unwrap joy’ on Christmas morning”.

“We’ve invested heavily in marketing for Cadbury this year, and we expect awareness to be higher than ever at Christmas,” said Lily Donagh, marketing manager for Cadbury Dairy Milk.

“We think we’ve really captured the spirit of Christmas morning – it’s sure to get customers looking forward to the joy of the season and everything that comes with it.”