Closely followed by Fifty Shades of Grey and Jurassic World.
Paddington was the UK's bestselling DVD of 2015, the British Video Association has revealed.
The StudioCanal movie sold nearly 1.2m copies on discs alone, while the rest of the top five was rounded off by Fifty Shades of Grey, Jurassic World, Minions and The Hobbit: The Battle of the Five Armies.
Combining Blu-ray and DVD sales, the UK's top five bestselling titles of 2015 remain the same, only with The Hobbit in third place, Fifty Shades in fourth and Minions in fifth.
Overall the home entertainment market grew to £2.24bn in 2015, up 1.5 per cent on 2014, while the UK's use of digital video services delivered a greater than predicted 30 per cent year-on-year uplift in sales, according to global information services provider, IHS.
"Despite the much suggested decline of discs, these latest figures showed that the format continues to be popular with consumers who are buying more than 320,000 discs every day," said Liz Bales, CEO, BVA and Industry Trust for IP awareness.
"These figures, while lower than previous years as people access content in many different ways, suggest there are still plenty of reasons to be optimistic about the success of both DVD and Blu-ray for years to come. With a particularly exciting year of films and TV to come in 2016, we can look forward to another strong year for the industry.”