Ramone, A Wilhelm Scream,[3] The Flatliners, Teenage Bottlerocket, Useless ID,[4] Versus The World, Implants, Direct Hit,[5] Local Resident Failure,[6] Much The Same, The Fullblast, Belvedere (band) and MakeWar.

In August 2009, The Decline recorded their debut album "I'm Not Gonna Lie To You" at The Blasting Room in Fort Collins, Colorado, with Bill Stevenson and Jason Livermore.

In June and July 2010 The Decline embarked on The Pinkeye Tour with Newcastle Skate Punk band Local Resident Failure.

During this performance The Decline announced their upcoming fully crowd-funded EP Can I Borrow A Feeling and debuted new songs Yahweh or the Highway and Cool Kids Can't Die.

[10] Subsequently, The Decline released a new single entitled "Giving Up Is A Gateway Drug" and embarked on a national tour, performing headline shows and as a support act for Local Resident Failure, Guttermouth and Frenzal Rhomb.

In July 2016, The Decline embarked on the second touring cycle for their album Resister, visiting Europe and the United Kingdom during summer for festival season and club shows with The Flatliners, or Manchester's Fair Do's.

[15] In November of 2016, The Decline were featured on a Teenage Bottlerocket tribute album for Brandon Carlisle compiled by Ramone To The Bone Records, covering the song "Can't Quit You".

In July 2019, The Decline released a new single entitled Verge Collection which featured guest vocals by Stacey Dee from Bad Cop/Bad Cop.

[18] Verge Collection was supported by a national Australian tour during which Josh Barker from The Bob Gordon's filled in on drums for Harry, who had broken his arm and dislocated his shoulder in a mountain biking accident.

[19] Flash Gordon Ramsay Street was released on Pee Records on August 30, 2019, and followed with an Australian tour supported by Nerdlinger that October.

[20] Flash Gordon Ramsay Street featured guest vocals by Nuno Pereira from A Wilhelm Scream on the track War.

Subsequently, The Decline were announced on festivals in Europe and as a support act for Lagwagon for the following summer, however these shows did not go ahead due to the COVID-19 pandemic and were rescheduled for the following years.

In June 2022 at a show supporting Frenzal Rhomb in Perth, The Decline were joined on stage by their ex-guitarist Nathan Cooper, who performed some songs with the band.

In August 2022, The Decline commenced the Flash Gordon Ramsay Street European tour which had been rescheduled in 2020, appearing at summer festivals and as an opening act for Lagwagon, Mad Caddies, Get Dead, Useless ID, Belvedere, Anti-Flag and The Flatliners.

On January 7, 2023, The Decline posted a cameo video of Australian singer Shannon Noll who encouraged both bands to "shake hands and make up".

On July 28, 2023, The Decline announced their upcoming album "Magical Misery Tour" - an 18 song collection featuring all of the band’s non-album singles from 2015-2023.