The monument was unveiled in front of a large crowd on 9 June 1921, by Freddie Guest, the Secretary of State for Air. The inscription originally identified the airship as "Z21", but this was corrected in 1966. It was renovated and ceremonially rededicated on 3 September 1986 by Air Chief Marshal Sir Michael Stear. It was restored again between December 2007 and March 2008 as it was subsiding on one corner. A service of commemoration was held on 31 December 2018 led by Reverend Christopher Kilgour, the Vicar of the Parish of Northaw and Cuffley, on the date of the 100th anniversary of Leefe Robinson's death. An exhibition of photographs and memorabilia relating to Robinson was displayed in Cuffley Hall afterwards.