London terror attacker Khuram Butt reportedly worked at Westminster Tube station and had access to tunnels under the Houses of Parliament, as revelations about his alleged links to the 7/7 attacks emerge.

The killer was eventually sacked by the London Underground, not for his extremist views but for poor attendance.

He also worked at Canada Water station in the Docklands, according to the Mail Online.

The tabloid has a photograph, taken in May 2016, which shows him during his training period.

In it, he poses in an orange hi-vis jacket and blue uniform.