The 26^th and 27^th Battalion numbers were never used. In the years 1916 and 1918 further County of London Battalions were formed as follows:

29^th (County of London) Battalion, The London Regiment
1916 100^th and 102^nd Provisional Battalions (Territorial Force)
1917 29^th (County of London) Battalion, The London Regiment
1919 Disbanded

30^th (County of London) Battalion, The London Regiment
1916 101^st , 103^rd and 104^th Provisional Battalions (Territorial Force)
1917 30^th (County of London) Battalion, The London Regiment
1919 Disbanded

31^st (County of London) Battalion, The London Regiment
1916 105^th and 107^th Provisional Battalions (Territorial Force)
1917 31^st (County of London) Battalion, The London Regiment
1919 Disbanded

32^nd (County of London) Battalion, The London Regiment
1916 106^th and 108^th Provisional Battalions (Territorial Force)
1917 32^nd (County of London) Battalion, The London Regiment
1919 Disbanded

33^rd (County of London) Battalion, The London Regiment
1918 33^rd (County of London) Battalion, The London Regiment
1918 Absorbed 7^th (Service) Battalion, The Rifle Brigade (Prince Consort's Own)
1918 Location of operations - Comines, Helchin
1919 Disbanded

34^th (County of London) Battalion, The London Regiment
1918 34^th (County of London) Battalion, The London Regiment
1918 Absorbed 7^th (Service) Battalion, The King's Royal Rifle Corps
1918 Location of operations - France
1919 Disbanded