"delegation headed by" is correct and usable in written English.
It is typically used in contexts when a group of people are sent on a mission or to represent a certain organization or entity. For example, "The school board sent a delegation headed by the principal to attend the education conference."
The official delegation, headed by Ambassador Nikki Haley, included a delegate from the Center for Family & Human Rights (C-FAM), an organization with an extensive track record of opposing women's reproductive rights.
This week, Mr. Sarkozy dispatched a delegation headed by his finance minister, Christine Lagarde, to Tunisia.
Some, like members of the Labour Party delegation headed by former Prime Minister Clement Attlee, were seasoned anti-Communists.
The American delegation, headed by Secretary of State Madeleine K. Albright, was taken aback by the French objections.
By late 1508, Gossart was on his way to Rome, as part of a delegation headed by Philip of Burgundy, an illegitimate son of Philip the Good.
On Thursday morning, a Libyan delegation, headed by Mahmoud Jibril, the de facto foreign minister, sat with Mr. Lévy in Mr. Sarkozy's office.
In his letter, Allawi asked Bush to convene a summit this month in Baghdad, with an American delegation headed by Wolfowitz.
Last week, Grand Ayatollah Sistani sent a delegation headed by Ahmed al-Safi, one of his representatives, to address the water crisis.
A European Union delegation, headed by Foreign Minister Louis Michel of Belgium, arrived in Tehran this evening to meet President Khatami and Mr. Kharrazi.
The delegation, headed by Olli Heinonen, the agency's deputy director, held discussions with Iran's deputy nuclear negotiator, Javad Vaeedi, two weeks ago.
The American delegation, headed by Robert B. Zoellick, arrived safely in Qatar several hours after the attack, the White House said.
