Downton appy: Julian Fellowes tries new format for novel

Belgravia, set in 1840s London, will be delivered weekly via an app and will feature extras such as music, character portraits and family trees

The Downton Abbey creator, Julian Fellowes, is to release his new novel, a historical drama set in London during the 1840s, in instalments via an app.

In a tradition that dates back to Charles Dickens, each of Belgravia's 11 chapters will be delivered on a weekly basis, and will come with multimedia extras including music, character portraits, family trees and an audio book version.