Uniform of the british army after Childers reforms of 1881:
1st row: Royal regiments, english regiments, scottish lowland regiments, irish regiments, guards regiments, fusiliers, highlanders, rifles
2nd row: The Blues, Horse Guards, Dragoons Guards, The Carabiniers (6th dragoon guards), Scots Greys, hussars, lancers
3rd row: indian regiments, gurkhas, Bengal lancers
In the right corner you can also see an infantryman and a cavalryman in colonial khaki dress and the symbol of the era - the famous Martini-Henry rifle and carbine.
P.S. Thanks to tsd715 for indian turban