The first to be unveiled was a now Grade II-listed bronze bust of Sullivan in 1903. Located at the northern end of Victoria Embankment Gardens, it is the work of Sir William Goscombe John and, along with the bust which sits atop a pedestal, the monument features a scantily clad female muse leaning against the pillar in apparent grief.

Sheet music, a mandolin and a Pan mask all lie in a heap beside her – the discarded props of Sullivan’s profession – and on the side of the plinth are inscribed some lines from his work, The Yeoman of the Guard: “Is life a boon? If so, it must befall that Death, whene’er he call, must call too soon” (the same lines are inscribed on the sheet music).

The bronze memorial plaque to Gilbert, meanwhile, was unveiled in 1915, four years after his death. It’s attached to Charing Cross Pier on the downstream side of Hungerford Bridge and, the work of Sir George Frampton, shows Gilbert in profile relief flanked by figures of Comedy and Tragedy.

Gilbert is accompanied by an inscription which reads: “His foe was folly & his weapon wit”. A shield underneath bears a Latin inscription which translates as “I would rather die than change”.

The location of the memorials is not coincidental – the career of Gilbert and Sullivan was closely associated with the nearby Savoy Theatre, where many of their works were premiered thanks to its owner Richard D’Oyly Carte – he’s also commemorated in a memorial opposite the entrance to the Savoy nearby.