http://www.aussiegenes.net/1979.htm
Edmund Hilder (Miller)
* Marriage: Sarah Vigor on 11 Nov 1815 in Cuckfield, Sussex, England
Edmund married Sarah Vigor, daughter of James Vigor (Butcher) and Mary Carrick Wood, on 11 Nov 1815 in Cuckfield, Sussex, England. (Sarah Vigor was born in 1792 in Burwash, Sussex, England, christened on 11 Nov 1792 in Burwash, Sussex, England and died about 1830.)
Also
Although BM&D began to be registered in England in 1837, not all events were recorded across the board until about 1875, so there were many events just not registered at all.No idea why it is missing from FreeBDM (well - probably should be why it is missing from the GRO indexes - but they are known to have many errors)