The precise origin is not clear, though 'tea biscuits' are known from advertisements by several makers from the early 19th Century, and from the pioneering Huntley and Palmers from the 1840's. The term 'Rich Tea' seems to appear almost simultaneously around 1901 from two Scottish companies, Mitchell & Muil, and McVitie & Price

Rich Tea Biscuit
Image: Sean Whitton
