British Architect is a term that refers to architects from the United Kingdom. Three notable British Architects are Sir Christopher WREN, John Nash, and James Spence. Sir Christopher WREN was an English architect, astronomer, and mathematician who designed many of London's most iconic buildings, including St. Paul's Cathedral. John Nash was an English architect who designed many of the terraced houses in London during the 19th century. James Spence was a Scottish architect who designed many churches and public buildings in Scotland.