Lambert belonged to a group considering that curates should not be treated as "ecclesiastical butlers". It included also his Brasenose contemporary
John Oakley and Harry Jones (1823–1900); with sympathisers F. D. Maurice,
Andrew Kennedy Hutchison Boyd and
Phillips Brooks. Jones in his memoirs placed it during the time when he was at
St Mark's, Mayfair, so in the period 1852–1857, a "curate's clerical club" that became a well-attended dining club, with Maurice and
Arthur Penrhyn Stanley. Lambert is regarded as a disciple of Maurice and Stanley, and was a professed
Christian Socialist.
Thomas Hughes named Lambert and Harry Jones, with Maurice, Stanley and others, in an 1878 list of "theological liberals" in the generally conservative Church of England. In campaigning for
free education in south-east London, during the 1880s, Lambert encountered much conservative opposition; an ally was
Russell Wakefield, then at
Sydenham. Lambert was one of a small number of Church of England priests who worked in the most deprived areas of London, in the third quarter of the 19th century—before the social issues reached a peak of attention. Others were
John Richard Green, Edwards Comerford Hawkins and
Charles Lowder.
John Ruskin met in 1867 with the layman
Edward Denison, Green, then at St Philip's,
Stepney, and Lambert, to discuss "what could be done for the poor." Lambert's take on a settlement or colony to help Denison's plan was for men to move in, become
rate payers, and so strengthen the local boards which were his particular concern. The Methodist
John Scott Lidgett, when still young, met with Green and Lambert, and discussed the same topic on the poor. In 1876
Kate Potter, assisting
Octavia Hill, met Lambert and Annie Townsend, secretary of MABYS, while collecting rents in the
East End. A social relationship was struck up.
Sidney Webb, Potter's brother-in-law from 1892, consulted Lambert as an expert on the
Poor Law (mentioned with Samuel Augustus Barnett and
William Mitchell Acworth, 1890 letter to
Beatrice Potter). ==Works==