In the United Kingdom, some royal residences and episcopal residences are referred to as palaces. In England, Blenheim Palace is the only stately home to bear that title which was not formerly a royal or episcopal residence. In Scotland, some stately homes are called palaces. The list is incomplete.
England
Official Royal Residences:
St. James's Palace – the most senior royal residence in London. It was a principal residence of the monarch from 1702 until 1837. It is the official London residence of some members of the royal family.
Kensington Palace – a royal residence since 1689, but not a principal residence of the monarch since 1760. It is the official London residence of some members of the royal family.