Woodbridge Antiques has dated this piece to the 1920s.
The maker's mark is also very clear: James Dixon & Sons.

A particularly superior sugar bowl, a good heavy weight and sits very sturdy. It is in super antique collector's condition. Would grace any table or tea tray and stand in pride of place!
Hallmarks: Sheffield 1917 by James Dixon & Sons
Measurements:
Height: to top of handle 8.3 cm approx.
Width: 14 cm approx.
Depth: 8 cm approx.
Weight: 149.5 grams approx.
Woodbridge Antiques has dated this piece to the 1920s.
Specialists in quality antique silver, fine jewellery & accessories
You can view the stock and full dealer information on the Woodbridge Antiques Profile Page