I'm assuming this set is one produced in the late 19th century by Leeds revivalist potters, probably members of the Senior family. Some of them were working at the original Leeds Pottery when it closed. They bought many of the original molds, so they and their works can be considered the legitimate successors of the main factory.
The Senior family, in various configurations, hand-reproduced high-quality Leeds wares from the 1890s until the start of World War II. This set is authentic in shape, with silver luster additions to bring out the molded details.
The Company of Merchants of the Staple of England has an interesting website and you can look up the history if you're interested. In any event, this revivalist set, marked Leeds Pottery on the bottom, is an antique in its own right. It is in great condition. A little bit of wear to the luster, and several glaze flaws or scrapes, but no breaks or cracks, and only one very tiny chip on the outer edge of the creamer lip (shown). The teapot is 8.25 inches long from handle to spout.
Looking for antiques and reference books on ceramics? Feel free to check out laureate. This item is in the category "Collectibles\Kitchen & Home\Dinnerware & Serveware\Teapots & Tea Sets". The seller is "toaf" and is located in this country: US. This item can be shipped worldwide.