|This is the same uniform as worn in the Great War.|
By 1923 lower ranks in most regiments had adopted regimental buttons and were wearing collar badges.
The soldier on the left is wearing Norfolk Regiment buttons and shoulder titles on a khaki drill tunic.
The Norfolk Regiment became the Royal Norfolk Regiment in 1935. The cap badge changed, so did the shoulder titles and buttons.
With most Regiments the collar badges and buttons will be the only clue that the photograph dates from between the wars.