– amalgamated with 1/9th Bn from 56th (1/1st London) Division January 1918 and became 9th Bn 2/10th (County of London) Bn, London Regiment (Hackney) 2/11th (County of London) Bn, London Regiment (Finsbury Rifles) – disbanded January 1918 and drafted to 1/20th, 1/21st and 1/22nd Bns 2/12th (County of London) Bn, London Regiment (The Rangers) – amalgamated with 1/12th Bn from 56th (1/1st London) Division January 1918 and became 12th Bn 44th Coy, MGC – attached from 15th (Scottish) Division 23 February–22 March 1917 215th Coy, MGC – joined March 1917; to 58th Bn, MGC, March 1918 175th TMB – formed before embarkation in January 1917 Support Troops Mounted Troops Duke of Lancaster's Own Yeomanry (less A Squadron) – left early 1915 A Squadron, 1/Hampshire Carabiniers – joined March 1916, left January 1917 Wessex Divisional Cyclist Company, Army Cyclist Corps – remained in UK 1/1st Kent Cyclist Bn, ACC – joined October, left December 1915 Artillery 1/I City of London Brigade, Royal Field Artillery (RFA) – joined from 1st London Division; left September 1915 1/II County of London Brigade, RFA – joined from 1st London Division; left September 1915 1/III County of London Brigade, RFA – joined from 1st London Division; left September 1915 1/IV County of London (Howitzer) Brigade, RFA – joined from 1st London Division; left September 1915 CCXC (2/I City of London) Brigade, RFA – joined September 1915 CCXCI (2/II County of London) Brigade, RFA – joined September 1915 CCXCIII (2/III County of London) Brigade, RFA – joined September 1915; left on arrival in France 1/Glamorganshire Royal Horse Artillery (RHA) – joined August 1916 1/Shropshire RHA – joined August 1916 2/IV County of London (Howitzer) Brigade, RFA – joined September 1915; broken up between 2/I and 2/II Bdes in July 1916 1/1st London Heavy Battery, Royal Garrison Artillery (RGA) – joined from 1st London Division; left 11 February 1916 2/1st London Heavy Battery, RGA – joined September 1915; remained in UK 58th Divisional Trench Mortar Brigade – formed December 1916 from Shropshire and Glamorgan RHA Ammunition Columns and other volunteers V.58 Heavy TMB X.58 Medium TMB Y.58 Medium TMB Z.58 Medium TMB 58th (2/1st London) Divisional Ammunition Column, RFA 58th Divisional Engineers 2/1st London Field Company, Royal Engineers (RE) – rejoined 56th (1st London) Division February 1916 2/2nd London Field Co, RE – rejoined 56th (1st London) Division February 1916 511th (1/5th London) Field Co, RE – joined