Swindon's Bus Company (formerly Thamesdown Transport) is a bus operator in England, serving Swindon and the surrounding area. Previously owned by Swindon Borough Council, ownership passed to the Go-Ahead Group in February 2017 and the operation was rebranded as Thamesdown...Swindon's bus company, later simply Swindon's bus company.^[1]

Thamesdown Transport had its origins in 1904, when Swindon Corporation started to operate electric trams. Bus operation started in 1927, and two years later all the trams were replaced.^[2]

On local government re-organisation in April 1974, the functions of the corporation were transferred to the new Thamesdown district, and the name of the bus operation was changed to Thamesdown Transport. A blue, green and white livery was used. During the 1980s, operations were expanded to rural areas around Swindon, to replace services withdrawn by Alder Valley and Bristol Omnibus Company.

To comply with the Transport Act 1985, the operation was transferred into a separate legal entity.^[3] Swindon Borough Council retained ownership from 1986 until the company was sold to the Go-Ahead Group in February 2017,^[4] and was integrated into its Go South Coast subsidiary.^[5][6] At that time the fleet consisted of 85 buses.^[6]

From April 2017, the branding "Swindon's bus company" was employed, together with a new livery in green and blue, with red and yellow highlights.^[7]

Thamesdown implemented a fastFare system on 1 August 2005 in which passengers must pay the exact fare as change will not be given by the driver.^[8] This has generated some criticism as its implementation often results in passengers paying more than the necessary fare.^[9] This can be due to not having the correct change or, more commonly, tourists and visitors being unaware of the policy until after they have deposited money. The reasoning behind the policy is that if the driver does not have to deal with giving change, passenger loading times are shortened, resulting in a faster and more reliable service. It also reduces the risk of attacks on drivers. This policy was scrapped in 2017, when Thamesdown Transport was sold to Go South Coast.

Thamesdown has also implemented a Text and Go service, where passengers can send an SMS message containing a seven digit bus stop identifier to a premium number to receive information about the next three buses due to arrive at that stop.^[10]

Since Go South Coast has taken over, they have introduced new ways to buy tickets. Contactless payments have been introduced,^[11] and in 2018, the Clickit2ride app was made available,^[12] in common with the rest of Go South Coast. The app can be used to purchase time-defined tickets,^[13] but not single or return tickets. The app produces a QR code, which is scanned by the bus's ticket machine..

• Buses in Swindon
• List of bus operating companies