Dukes in the United Kingdom
Duke, in the United Kingdom, is the highest-ranking hereditary title in all four peerages of the British Isles. A duke thus outranks all other holders of titles of nobility (marquess, earl, viscount and baron).
Baronet
The Premier Baronet (of England) is the unofficial title afforded to the current holder of the oldest extant baronetcy in the realm. The Premier Baronet is regarded as the senior member of the Baronetage, and ranks above other baronets (unless they hold a peerage title) in the United Kingdom Order of Precedence. Sir Nicholas Bacon, 14th Baronet, is the current Premier Baronet, whose family's senior title was created by King James I in 1611.