T. Wall and Son
T. Wall and Son, of Acton London, meat producer.
1913 Thomas Wall and Son Ltd reputedly considered manufacturing ice cream to fill in the seasonal downturn in sales of meat pies and sausages in the summer months, but the advent of the First World War prevented this.
1917 William Lever (Baron Leverhulme) bought the Isle of Lewis in 1917 and the isles of North and South Harris in 1919. He set up a company called MacFisheries, and acquired several food companies, intending to develop the fishing industry and improve the conditions of the crofter population of these Scottish western isles.
1920 T. Wall and Son, sausage makers, was acquired by MacFisheries
1922 Acquired by Lever Brothers.
1922 Ice cream production commenced in 1922 at a factory in Acton, London. As ice cream grew in significance, Unilever split the company into two, T. Wall and Son (Ice Cream) Ltd and T. Wall and Son (Meats) Ltd.
1959, Wall's doubled capacity by opening a purpose built ice cream factory at Gloucester, England.
1981 Unilever merged T. Wall and Son (Ice Cream) Ltd with Birds Eye Foods to form Birds Eye Wall's Ltd. Following a review of production facilities, the Gloucester factory was expanded and updated, and the Acton factory was closed ("Project Phoenix" 1983).
1994 Sold the meat company.
Unilever has continued to use the Walls brand for ice cream in the UK
Sources of Information
- Biography of William Hesketh Lever, ODNB 
-  Wikipedia