Paddy Ashdown, a former leader of the Liberal Democrats, soldier and diplomat, has died aged 77 after a short illness, his party has said.
Mr Ashdown led the Liberal Democrats for 11 years from 1988, steering it to become a force in British politics to challenge the duopoly of the Conservatives and the Labour Party.
A former Special Boat Service commando, he entered parliament in 1983 and was elected leader of the Liberal Democrats five years later.
He later held other roles such as High Commissioner for Bosnia Herzegovina in 2002.
"It is with great sadness that we announce that Paddy Ashdown passed away earlier this evening following a short illness," the party said on Twitter.
"Paddy will be desperately missed by everyone at the Liberal Democrats as a dear friend and colleague, and remembered as someone who made an immeasurable contribution to furthering the cause of liberalism."
Vince Cable, the party's current leader, said it was "a hugely sad day" for the party and everyone else across politics "who had immense affection and respect for Paddy".
Mr Cable said: "He was famous for his politics, but his talents extended well beyond that arena.
"He was an accomplished author, and had spent many years serving the country before he got near the House of Commons.
"Few people know how hard he fought to get into politics following his service in the marines and diplomatic service.
"He exercised every ounce of his considerable personal stamina to win the Yeovil seat.
"He was a personal example to me and to many other candidates."
