Her issue with Mamma Mia 2 specifically stemmed from the idea that she didn’t see how it could work, but her concerns were dashed as she immersed herself deeper and deeper into the project.
In fact, the British actress not only appeared in both Paddington and Paddington 2 but she also frequently appeared as Molly Weasley in the Harry Potter film franchise.
Of course, it is worth noting that Julie Walters does not have an inherent aversion to the concept of sequels, as she has appeared in several over the course of her career.