Comedians have ridiculed the NSW government’s plan to promote a horse race on the sails of the Sydney Opera House by projecting the words “Advertise here. Call Alan“ onto the famous building.

Satirical group The Chaser posted a video of the prank on Tuesday morning where they can also be seen shining the message, which was accompanied by Alan Jones’ purported mobile number, onto NSW Parliament House and the NSW Art Gallery.

The top-rated broadcaster publicly berated and called for the sacking of Opera House chief executive Louise Herron on Friday after she ruled out allowing words or branding highlighting The Everest race to be projected onto the building.

NSW Premier Gladys Berejiklian then intervened within hours of the interview to allow the horse race’s promotion but has denied she caved in to Jones.

“If anyone wants to advertise on the biggest billboards in Sydney, this guy called Alan is apparently in charge. Call him,” The Chaser wrote on Facebook alongside the video.

In the video, Chaser comedian Charles Firth is shown unsuccessfully trying to talk his way past a security guard at the Opera House before they managed to project their message onto the famous landmark.

“Alan called your boss,” he tells the guard.

“Gave her a big talking to ... you’re allowed to project on there, that’s the biggest billboard in Sydney, mate.”