Postwar unrest beyond the Royal Navy

Did British land forces face similar unrest during the immediate post-First World War intervention in Russia?

Yes. Ground forces also had demobilization problems, particularly the Indian Army and Territorial personnel serving in India who wanted to be relieved.

Postwar unrest also affected ground forces. The Indian Army and Territorial personnel serving in India are identified as examples of personnel frustrated by continued service. The brief reply does not develop the particular incidents or their outcomes.