The Irish delegates sent to London were designated as "plenipotentiaries", meaning that they had full authority to sign an agreement on behalf of the Dáil government. The Treaty would then be subject to approval by the Dáil. The majority of the delegates, including Arthur Griffith (leader), Robert Barton and Eamonn Duggan (with Erskine Childers as Secretary General to the delegation) set up headquarters at 22 Hans Place in Knightsbridge on 11 October 1921. Collins shared quarters at 15 Cadogan Gardens with the delegation's publicity department, secretary Diarmuid O'Hegarty, Joseph McGrath as well as substantial intelligence and bodyguard personnel including Liam Tobin, Tom Cullen, Ned Broy, Emmet Dalton and Joseph Dolan of The Squad.