The British Millennial Harbinger was a religious magazine established by the early Restoration Movement leader James Wallis in 1837.
[1]: 369 Wallis was a member of a group in Nottingham that withdrew from the Scotch Baptist church in 1836 to form a Church of Christ.
[1]: 369 It was originally named The Christian Messenger and Reformer, then The Christian Messenger and Family Magazine.
Wallis officially named the magazine The British Millennial Harbinger in 1848.
[2] His successor from 1861, David King, changed the name to the British Harbinger in 1866, then to the Ecclesiastical Observer 1871-1889.