Between Sunday 5th September 2010 and Monday 3rd June 2013, Service 144 operated every 30-minutes during the day, Monday to Saturday, between Worcester and Birmingham, inter-worked with short-working journeys between Worcester and Catshill to give a 15-minute frequency on that section of the route.
Service 144A was introduced to distinguish the short-working journeys from the full-length journeys.
Service 144A was introduced by First Midland Red Buses Limited on Monday 3rd June 2013 to distinguish the short-working journeys of Service 144 from the full-route journeys. From this time, all Service 144 journeys that terminated at Catshill were renumbered to Service 144A, and the route of Service 144A was also changed to include the grounds of Webbs Garden Centre near Wychbold. Service 144 continued to run direct along the A38.
From Monday 1st September 2014, certain journeys of Service 144A were extended to Halesowen and renumbered to run as Service 147, but this was short-lived and Service 147 was withdrawn on Sunday 10th April 2016. Journeys that operated as Service 147 were renumbered back to Service 144A and cut back to run only between Worcester and Catshill. From the same time, Service 144A no longer ran via the Princess of Wales Hospital with all journeys being diverted to run via Sidemoor.
On Sunday 1st May 2022, the Catshill to Birmingham section of Service 144 was withdrawn by First Worcester, so with all their journeys now only running between Worcester and Catshill, the 144A route number was retired by First and all their journeys run as Service 144. The 144A route number was then used from Tuesday 3rd May 2022 by National Express West Midlands on a new service to partly replace the withdrawn section of First's Service 144. The new Service 144A initially ran every 70-minutes between Bromsgrove, Rubery and Longbridge, with the aid of funding from Worcestershire County Council and Centro.
|September||2015||Worcester ↔ Bromsgrove ↔ Catshill|
|April||2016||Worcester ↔ Bromsgrove ↔ Catshill|