Note: Clareholme Opal (image 5) was a field spaniel. Contrast with Titania of Eastcote (image 12), a cocker spaniel, both from 1910.
Sources:
Images 1-7: Smith, A.C. (1910, October 29). The kennel club show. Country Life, pp. 597-599
Images 8-12: Smith, A.C. (1910, December 3). Ladies’ kennel association show. Country Life, pp. 789-791