What is holding these bricks up?

[PA-18]

The recent wind ripped off the trim to one of our windows and revealed a 15mm gap between the top of the window frame and the soldier course above. This is a 1960s house with cavity. Sticking a ruler in shows the gap goes to the back of the brick and hits what I assume is a poured concrete lintel holding up the inner leaf.

This window is 3.6m wide so must have some weight above it! What is holding up the outer leaf? Cheers

 

[^woody^]

Voodoo?

Or ties to the concrete lintel on the back.

 

[stuart45]

Most likely Voodoo.
Could possibly be this.

 

[^woody^]

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