It was formed in 1968[1] by merging the efforts of the London Missionary Society (operating exclusively in Papua),[2] the relatively marginal Presbyterian church (largely confined to Port Moresby itself) and the Methodist mission (largely operating in New Guinea and nearby islands, the western and northern Solomons and the islands of eastern Papua).
As these denominations in western countries have in recent years lost many members and participants to a lack of worship at all in recent decades, the United Church of Papua New Guinea and Solomon Islands has lost some to more fundamentalist sects.
In matters of social policy it tends as with its sister denominations in other Commonwealth countries to be largely in accord with the Anglican and Lutheran churches.
On the other hand, the Church is considerably more broad-minded in such matters than more recently arrived fundamentalist groups, and it maintains the historic Methodist and Congregational strong emphasis on education and literacy in the broadest sense.
As with the Anglican and Lutheran churches, the United Church has suffered some attrition in recent decades as a result of aggressive proselytising among its constituents by fundamentalist and pentecostalist groups originating in the United States of America and, to a lesser extent, Australia.