The Harry Potter movies can be streamed on several platforms, including:

• Peacock: You can stream all eight Harry Potter movies on Peacock with a Premium or Premium Plus subscription, which starts at $4.99 a month. Peacock offers a free trial for new subscribers, which provides a week of free access to the streaming service.

• HBO Max: All eight Harry Potter movies are currently streaming on HBO Max.

• Netflix: The Harry Potter movies are available on Netflix in some countries, including Australia, Japan, and the UK. However, they are not currently available on Netflix in the US.

• Other options: The Harry Potter movies can also be found on other platforms, such as Apple TV, Amazon Prime, and local video-on-demand services. The entire franchise can be purchased on the Sky Store.

Its worth noting that the availability of the Harry Potter movies on these platforms may change over time, so its best to check each platforms current offerings before subscribing or purchasing.