With the aim of improving efficiency, in 2015 the National Transport Authority put the operation of 24 Dublin Bus routes out to tender.

Go-Ahead Ireland took over the operation of a further six routes from Dublin to counties Offaly, Laois, Kildare and Meath from Bus Éireann between December 2019 and January 2020.

It uses Alexander Dennis Enviro 200MMCs owned by Go-Ahead rather than the NTA as is the case on the Dublin city and commuter routes.

It was later decided that an extra 12 double decker buses were required in order to be able to fulfill the full quantity of routes due to transfer.

[citation needed] Ten Mercedes-Benz Citaros and five Wright Gemini bodied Volvo B7TLs were transferred from Oxford Bus Company and Go-Ahead London as driver trainers.

[17][18] The Dublin Commuter routes are operated by a mixture of double deck VDL Futura coaches and Sunsundegui SB3 bodied Volvo B8R interurban buses.

[19] In August 2020 Go-Ahead Ireland began operation of 8 new routes in North and West County Dublin.