The bomb destroyed number 30 double-decker bus in Tavistock Square in central London July 8, 2005. Reuters

LONDON (AP) — A husband and wife have been convicted of planning a large-scale bombing of civilian targets in London to mark the 10th anniversary of the July 7, 2005 attacks on the city's transit system.

Mohammed Rehman, 25, and his wife Sana Ahmed Khan, 24, were found guilty Tuesday at the Old Bailey court of plotting an attack on Westfield shopping centre.

Prosecutors said Rehman was only a few days away from finishing work on a bomb capable of causing mass casualties. Authorities found a video of him detonating a smaller device in his backyard along with 10kg of nitrate explosives after raiding the couple's Berkshire home.

They said he had used the name Silent Bomber and a picture of Jihadi John to ask Twitter followers to help him choose a target. In a tweet, he said: "'Westfield shopping centre or London underground? Any advice would be appreciated greatly."



In another tweet, he said: "Plus I don’t need an army, all I need is my explosive vest and a beautiful area full of crowded ***** like you LOL”

He also boasted that once he had made the required amount of explosives he will "be wearing them on my chest."

According to Mail Online, both Mohammed and his wife, Sana Ahmed Khan, were infatuated with ISIS and Al Qaeda propaganda and had written out a pledge of allegiance to Abu Bakr Al-Baghdadi, the leader of Islamic State.

His wife was found guilty of funding his scheme and purchasing the chemicals required to make the explosives.

The July 7 attacks killed 52 civilians.