British Government are appealing decision for MPs to have a say in Article 50 in Supreme Court

All the parties involved in the Supreme Court battle over Brexit have formally given their backing to the 11 justices hearing the historic case, it was announced at the start of the hearing.

The highest court in the land is being asked by Government ministers to overturn a High Court ruling that the Prime Minister must seek MPs' approval to trigger the process of taking Britain out of the European Union.