Destruction of the London Sanctum

"Kaecilius! No!!"

- Wong to Kaecilius

The Destruction of the London Sanctum was part of an attack on the three Sanctum Sanctorums orchestrated by the Zealots in their quest to summon Dormammu.

Background
As Strange struggled with the realization of his training's true purpose, the temple was raided by Kaecilius and he was separated from Mordo as he was knocked into a portal towards New York City's Sanctum Sanctorum where Kaecilius was going.

Destruction
""London! Kaecilius!!""

- Wong to Doctor Strange and Karl Mordo

Kaecilius and the Zealots attacked the London Sanctum, battling and eventually killing it's protector, Sol Rama before they destroyed the Sanctum which ripped a massive explosion through Kamar-Taj. This led to opening of all portals. Strange was separated from Mordo as he was knocked into a portal towards New York City's Sanctum Sanctorum where Kaecilius was going.