Sadler teapot, milk jug and sugar bowl

The Stoke on Trent Museum webpage on James Sadler & Sons seems to indicate that this crinolined lady pattern was popular in the 1930s, though the backstamp evidently suggests a date of 1947+.    I have other pieces of this pattern made by different companies. 

The butter dish below, same pattern, is made by Lancaster and Sandland.

Lancaster & Sandland  apparently started in 1944.

This small dish has a backstamp from Royal Art Pottery, England.