Wedding of the year , at St Margaret's between Earl of Blandford and Miss Hornby . Today at St Margarets , Westminster , the Earl of Blandford was married to Miss Susan Hornby . Members of the Royal Family attended the reception and service . The reception was held at Goldsmiths Hall , London . Photo shows Her Majesty the Queen chats to Mr Winston Churchill after the ceremony today . 19 October 1951 Original caption from negative