Where can I research Royal Worcester patterns and history without guessing?

A solid starting point is the Royal Worcester Museum, which publishes research pages on key dates, factory ownership, product range (e.g. Blush Ivory, Evesham and egg makers) and factory marks. Their pages document timeline anchors such as 1789 royal warrant and 2008-2009 closures and brand sales that help keep research grounded. The history of the Portmeirion company confirms that in 2009 Royal Worcester trade names were acquired, useful for sorting historical production from later branded goods. In a market context, auction catalogues can show how works are described by specialists, especially painted fruit and named artists. Use multiple references, compare sign charts, museum examples, and multiple auction-valued photos.