Alfred Lancaster joined his brother, Charles William Lancaster in 1855 to form Charles William & Alfred Lancaster (successors to Charles Lancaster).
The partnership lasted only until 1859 when Alfred opened up on his own at 27 South Audley Street. In that year he patented a breech mechanism and cartridge charger (No. 2753).
In 1865 he patented a breechloader with linked firing pins (No. 1525).
In 1886 the firm moved to 50 Green Street, Grosvenor Square.
In 1890 Alfred died, and in 1892 Charles Lancaster & Co, run by H Thorn, bought the firm. It was subsequently bought by Stephen Grant and Joseph Lang Ltd before being bought by David Perkins. The records of the firm are held by David Perkins of Charles Lancaster & Co Ltd, The Firs, Bishopswood, Somerset TA20 3RU; Tel/Fax 01460 234354.