Just go to wiki and list of politicians families Annie but I give you as an example the Callaghans
James Callaghan (later Baron Callaghan of Cardiff, Prime Minister 1976–1979)
Margaret Jay (née Callaghan, later Baroness Jay of Paddington, Leader of the House of Lords 1998–2001), daughter of James
Peter Jay (British Ambassador to the United States), husband of Margaret
Douglas Jay, Baron Jay, father of the above and former Labour MP and Peer
Peggy Jay, wife of Douglas, Labour Councilor
Virginia Bottomley, Conservative politician, niece of Peggy.
Peter Bottomley, Conservative politician, husband of Virginia (see Bottomleys)
Julian Hunt, Baron Hunt of Chesterton, nephew of Peggy, Labour life peer
Tristram Hunt, son of Julian, Labour MP.
Interesting I thought that it's cross-party You can continue with the Bottomleys if you wish. But I believe last time I posted about this you thought it was just because they mixed socially. Seems its OK for some but not others.