Mohammed Jamil Asha, 26, who appeared at City of Westminster Magistrates Court in London, is accused of conspiring with Bilal Abdullah, Kafeel Ahmed and "others unknown".

The doctor, from Newcastle under Lyne, was remanded in custody and is due to appear at the Old Bailey on July 27.

Asha, wearing glasses and a white t-shirt, spoke only to confirm his name, date of birth and address at the brief court hearing on Friday.

He was the fourth person to be charged in connection with the terror plot.

He was arrested on the M6 motorway in the wake of the attacks. His wife, Marwa Asha, 27, was arrested at the same time but was released without charge last Thursday.

Iraqi doctor Bilal Abdullah was the first person to be charged over the London and Glasgow attacks.

He was arrested after a flaming Jeep was driven into the doors of the arrival hall of Glasgow Airport.

He is also due to appear at the Old Bailey on July 27.

Kafeel Ahmed, 27, is in a critical conditions with serious burns in a specialist unit at Glasgow Royal Infirmary. Ahmed, who was also arrested at Glasgow Airport, was described earlier this week as in an "extremely poor physical state".