[newsjunkie]

Disney + have most of the series as weekly releases.

As do Apple TV+ and even some shows on Netflix are not released in one go.

In fact often you are more likely to see a series release of a drama on Disney & Apple than ITV or BBC. It helps them to stretch their content out over weeks/months and not leave long period with no new material and one presume they are not receiving lots of complaints as they would not do it.