Mark Byford has been appointed acting director general of the BBC following the resignation of Greg Dyke.
Mark Byford was responsible for the BBC's complaints system
Mr Byford will continue his responsibilities overseeing pre- and post-broadcast programme compliance across the corporation.
He was appointed deputy director general in January responsible for an enhanced complaints operation.
He has been with the BBC for 24 years, having joined the organisation straight from University in Leeds in 1979.
The BBC's editorial policy department, which deals with programming issues before they are broadcast, reported directly to Mr Byford in his job as deputy director general.
On his appointment to that role, Mr Byford said he was proud and privileged, adding: "I will strive to promote high standards, quality and the upholding of the BBC's values."
Calling him "second most important person in the management structure ", Mr Dyke said: "Anyone who knows Mark understands he is passionate about public service broadcasting and the BBC's role in the UK and around the world."
The former World Service director also continued to lead the Global News Division, with overall responsibility for all the BBC's international news services across radio, television and online.
And he is a member of the BBC's Executive Committee.
Born in Castleford, West Yorkshire, on 13 June 1958, Mr Byford was educated at Lincoln School before studying law at the University of Leeds.
He graduated in 1979 with an honours degree and joined the BBC as a temporary holiday-relief assistant in the Look North newsroom.
Three months later he was appointed full-time as a regional journalist.
In 1982 he became assistant news editor at BBC TV Southampton, working on the daily television programme, South Today.
Mr Byford worked as a documentary features producer for BBC South from September 1985 until May 1987 when he became news editor at BBC West in Bristol.
In October 1988 he assumed responsibility for all the UK-wide network newsgathering operations as BBC TV's home news editor in London.
A year later Mr Byford became head of centre at Leeds, with responsibility for all regional television and local radio operations in Yorkshire and Humberside.
In 1990 he was appointed assistant controller at Regional Broadcasting (News and Current Affairs), with responsibility for regional journalism and its development.
Mr Byford joined the BBC's Board of Management in 1996 as director of regional broadcasting.
In 1998 he was appointed World Service director and in 2002 became leader of the BBC's newly formed Global News Division.
But he still finds time for his hobbies - football, cricket, rock music, travel and family life.