<Tr> <Td> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> </Td> </Tr> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> <P> Hereditary peers form part of the peerage in the United Kingdom . There are over eight hundred peers who hold titles that may be inherited . Formerly, most of them were entitled to sit in the House of Lords, but since the House of Lords Act 1999 was passed, only 92 are permitted to do so, unless they are also a life peer . Peers are called to the House of Lords with a writ of summons . </P> <P> Not all hereditary titles are titles of the peerage . For instance, baronets and baronetesses may pass on their titles, but they are not peers . Conversely, the holder of a non-hereditary title may belong to the peerage, as with life peers . Peerages may be created by means of letters patent, but the granting of new hereditary peerages has dwindled, with only six having been created since 1965, mostly for members of the royal family . </P>

When did hereditary peers lose the automatic right to attend the house of lords