[2] In February 1990, along with Brewers Motor Services and United Welsh Coaches, South Wales Transport was sold to Badgerline.

[3] 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 104 bus services in the South West Wales area, in and between Haverfordwest, Pembroke, Tenby, Carmarthen, Ammanford, Llanelli, Swansea, Pontardawe, Neath, Port Talbot, Maesteg, Bridgend and Cardiff.

Following contract wins in April 2024, their network was expanded in Pembrokeshire and the Vale of Glamorgan, incorporating locations such as Narberth, Whitland, Barry and Cardiff Airport.

In addition to internal South Wales work, First Cymru also operate the TrawsCymru T1 service between Carmarthen and Aberystwyth under contract to the Welsh Government using Yutong E12 electric vehicles leased from them.

Newly numbered services 89-92 link the two campuses with the city centre, Sketty, Uplands and new student accommodation in the Parc Tawe, railway station and Morfa Road areas.

Ten Wright StreetCar articulated buses were purchased especially for the services, and the road layout around Swansea City Centre was substantially changed to accommodate and prioritise these vehicles.

Much of the dedicated bus lanes for this scheme have now been removed from Swansea City Centre and the service is now predominantly operated by unbranded double deckers.

In 2023, First began operating Welsh Government owned Yutong E12 electric vehicles on this service from a bespoke depot in Carmarthen.

In 2010, the Swansea-Cardiff shuttle service became part of the Greyhound UK network and was operated by coaches with leather seats and additional legroom, which could be booked online for the first time.

In addition, the company has five former First Aberdeen and First West of England Volvo B7RLE / Wright Eclipse Urban training vehicles in yellow branding targeting potential new recruits.