List of hereditary peers in the House of Lords by virtue of a life peerage

1 Hereditary peers of first creation living at the time the House of Lords Act, 1999 came into force. 2 Hereditary peers who had served as Leader of the House of Lords living at the time the House of Lords Act, 1999 came into force. 3 Suo jure hereditary peeress not otherwise able to enter the House before the Peerage Act 1963.

List of hereditary peers in the House of Lords by virtue of a life peerage

1 Hereditary peers of first creation living at the time the House of Lords Act, 1999 came into force. 2 Hereditary peers who had served as Leader of the House of Lords living at the time the House of Lords Act, 1999 came into force. 3 Suo jure hereditary peeress not otherwise able to enter the House before the Peerage Act 1963.