Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 146,991 pages of information and 232,842 images on early companies, their products and the people who designed and built them.
1852 Formation of the Association of Foremen of the Engineering Trade
1858 6th anniversary dinner
1860 Eight anniversary of the founding of the Association
This seems to be the same as the London Association of Foremen Engineers, which was founded in 1852.