Most physical "Complete Packs" include exclusive behind-the-scenes featurettes, "Making Of" documentaries, and alternative footage.
You can find the at major retailers:
Whether you’re a long-time fan of Section 20 or a newcomer looking for high-octane tactical thrills, the is the definitive way to experience the explosive finale of one of the world's most intense action series. Strike Back Vendetta Complete Pack
The Vendetta pack centers on the original ten-part series that first aired in 2020 on Sky One and Cinemax. Here is what you get in the set: "Making Of" documentaries