In February 1990, along with Brewers Motor Services and United Welsh Coaches, South West Transport was sold to Badgerline. All initially retained their trading names but following Badgerline merging with GRT Group in April 1995 to form FirstBus, all Welsh operations were rebranded as First Cymru.
The company operates around 200 bus services in the south Wales area, in and between Haverfordwest, Pembroke, Tenby, Carmarthen, Ammanford, Llanelli, Swansea, Pontardawe, Neath, Port Talbot, Maesteg, Bridgend and Cardiff.
The company operates a bus rapid transit route in Swansea, branded Swansea Metro and a frequent shuttle service from Swansea to Cardiff.
In addition to internal South Wales work, First Cymru also runs up to Mid Wales on the TrawsCymru T1 and T1C services, but most duties between Carmarthen and Aberystwyth are subcontracted to the drivers of small operator Mid Wales Travel at the northern end, who not only drive First's vehicles but garage two of them overnight for them.
For students of Swansea University, Unibus service 8 links the Hendrefoelan Student Village, Singleton Park Campus and Bay Campus to Swansea City Centre. They also run a half hourly shuttle bus between Singleton Park Campus and Bay Campus called 8X and service 10 linking Singleton Park Campus and Bay Campus with student areas Uplands and Sketty. These replaced the 82a and 85.
In 2014, First Cymru started the Cymru Clipper express network which spans from Carmarthen to Cardiff.
Services X1, X2, X3, X4, X11, X13, X50, X51, X55 and X58 are encompassed into this network. Dedicated vehicles operate these services, with the majority of them offering WiFi and leather seats as standard.
First Cymru operate a bus rapid transport route between Singleton Hospital, Swansea University, Swansea City Centre and Morriston Hospital as Swansea Metro. On 28 August 2015 the fleet of Wright StreetCar articulated buses that operated the service were replaced by conventional buses and had lost the FTRmetro branding.
As at March 2014 the fleet consisted of 387 buses and coaches.
Media related to First Cymru at Wikimedia Commons