Where was Deadpool & Wolverine filmed

The movie was filmed mostly in the UK, but it was also shot in Canada. Given the genre, the number of special effects, and the highly destructible locations, many scenes were shot in a studio, and the Pinewood Studios in London was chosen. 

Void

In movie

Scene where Wolverine and Deadpool enter the Void, where they begin to fight each other. After the battle, Kasandra Nova's mutants arrive and they are forced to fight their way out....
Timing: 00:35:52

Real

Scene was shot in the Pitston Hills Wildlife Refuge, which is northwest of London. This revenge has a large man-made reservoir with a sandy road and scant vegetation around it, which was ideal for filming the scene.