George Patrick John Rushworth Jellicoe, 2nd Earl Jellicoe, KBE, DSO, MC, PC (born April 4,1918), is the longest serving member of the House of Lords, having succeeded his father as Earl Jellicoe in 1935 and come of age and taken his seat in 1939.

He was Leader of the House of Lords from 1970 to 1973, when he admitted casual affairs with prostitutes and resigned. Anthony Lambton, a junior minister, also resigned because of this scandal. Shortly after this Jellicoe became chairman of the large sugar company Tate & Lyle.

When the House of Lords Act 1999 removed his right to sit in the House of Lords in right of his hereditary peerage, he was created a life peer as Baron Jellicoe of Southampton, so he could continue to sit.

|- style="text-align: center;" | width="30%" |Preceded by:
The Lord Shackleton | width="40%" style="text-align: center;" |Lord Privy Seal
1970–1973 | width="30%" |Succeeded by:
The Lord Windlesham

Preceded by: John Jellicoe

Earl Jellicoe

Succeeded by: Current Incumbent