Though the McVitie & Price factory burned down in 1894, it was rebuilt the same year and remained operative until 1969, when production ceased and operations were transferred to English sites. McVitie & Price expanded to a new factory in Harlesden in 1910 and to Manchester in 1917. The firm acquired Edinburgh bakery Simon Henderson & Sons in 1922. McVitie & Price merged with another Scottish family bakery, Macfarlane, Lang & Co., Ltd, in 1948 to become United Biscuits Group.
McVitie’s brand products are now manufactured in five United Kingdom factories: the two former McVitie & Price factories in Harlesden and Manchester, a former Macfarlane, Lang & Co. factory named Victoria Biscuit Works in Glasgow, a former Carr’s factory named The Biscuit Works established 1831 inCarlisle, and the McVitie’s Cake Co. factory (formerly Riley’s Toffee Works) in Halifax.
Info gleaned from Wikipedia