Roger Anthony Scantlebury (born August 1936) is a British computer scientist and Internet pioneer who worked at the National Physical Laboratory (NPL) and later at Logica.
During the 1970s, he was a major figure in the International Network Working Group through which he was an early contributor to concepts used in the Transmission Control Program which became part of the Internet protocol suite.
[1] Following this he was tasked by Derek Barber to lead the implementation of Donald Davies' pioneering packet switching concepts for data communication.
[3][4][5][6][7] In October 1967, he attended the Symposium on Operating Systems Principles in the United States, where he gave an exposition of packet-switching, developed at NPL (and referenced the work of Paul Baran).
[1][37][38] Scantlebury joined Logica in 1977 in their Communications Division,[1] where he worked on the CCITT (ITU-T) X.25 protocol and with the formation of the Euronet, a pan-European virtual circuit network using X.25.