More British Divisions to come, including 10th (Irish) Division, 11th (Northern) Division, 13th (Western) Division, 53rd (Welsh) Division and 54th Division.

29th DIVISION

86th Brigade
2nd Royal Fusiliers
1st Lancashire Fusiliers
1st Royal Munster Fusiliers
1st Royal Dublin Fusiliers

87th Brigade
2nd South Wales Borderers
1st King's Own Scottish Borderers
1st Royal Inniskilling Fusiliers
1st Border Regiment

88th Brigade
2nd Hampshire Regiment
4th Worcestershire Regiment
1st Essex Regiment
5th Royal Scots

Newfoundland Regiment (joined September 1915)
London Regiment (joined September 1915) 

42nd EAST LANCASHIRE DIVISION

125th Brigade
5th Lancashire Fusiliers
6th Lancashire Fusiliers
7th Lancashire Fusiliers
8th Lancashire Fusiliers

126th Brigade
4th East Lancashire Regiment
5th East Lancashire Regiment
9th Manchester Regiment
10th Manchester Regiment

127th Brigade
5th Manchester Regiment
6th Manchester Regiment
7th Manchester Regiment
8th Manchester Regiment

52nd LOWLAND DIVISION

155th Brigade
4th Royal Scots Fusiliers
5th Royal Scots Fusiliers
4th King's Own Scottish Borderers
5th King's Own Scottish Borderers

156th Brigade
4th Royal Scots
7th Royal Scots
7th Scottish Rifles
8th Scottish Rifles

157th Brigade
5th Highland Light Infantry
6th Highland Light Infantry
7th Highland Light Infantry
5th Argyll and Sutherland Highlanders

ROYAL NAVAL DIVISION

1st Naval Brigade
Drake Battalion
Nelson Battalion
Hawke Battalion
Hood Battalion

2nd Naval Brigade
1st Battalion Royal Marine Light Infantry (RMLI)
2nd Battalion Royal Marine Light Infantry (RMLI)
Howe Battalion
Anson Battalion

Marine Brigade
Chatham Battalion
Portsmouth Battalion
Deal Battalion

RAMC
No 1 Field Ambulance
No 1 Field Company Engineers
No 2 Field Company Engineers

Artillery

7th Indian Mountain Artillery Brigade
21st (Kohat) Battery
26th (Jacob's) Battery
Second Indian Field Ambulance
Second Ammunition Column & Supply Detachment