In 1989 Thames Transit expanded by buying South Midland, the former country area of The City of Oxford Motor Services, primarily operating rural routes in Oxfordshire. This acquisition strengthened Thames Transit's hand against City of Oxford Motor Services, providing it with several routes where it was the sole provider. The company then grew significantly in the early 1990s, introducing larger
Mercedes-Benz minibuses with 32-seat capacity and buying new vehicles for the
Oxford Tube coach service, which was starting to perform well against rival City of Oxford's Citylink service. City of Oxford itself had been forced to spread its defensive tactics following the South Midland acquisition, and this allowed Thames Transit to grow. In 1994 the firm bought its first midibuses: a fleet of 9.8 metre step-entrance
Dennis Darts. Thirteen were bought for the original number 1 route, and new branding was applied, adorning the buses with a giant blackbird called 'Bertie' and the service named 'The Blackbird Flyer'. Continuing the minibus philosophy, the buses were scheduled every four or five minutes. There was a noticeable shift of traffic away from City of Oxford as passengers responded to Thames Transit's new branding and vehicles. The new vehicle type and the use of branding proved to be a precursor for other route changes; the company later incrementally introduced the Rose Hill Runner (number 3 route running from Rose Hill to Oxford city centre), City Cavalier (number 7 route: Barton to Cutteslowe via Headington, city centre and Summertown), Kidlington Cavalier (number 7A running originally from Kidlington to St Aldates), Carousel (10/10A "city circle" service running in both directions from the city centre to Summertown, Marston, Headington, Wood Farm, Cowley and back to the city centre), and Witney Weaver (100, Oxford to Witney and Carterton), as brands for existing routes which were upgraded to new Dennis Darts. It also introduced branding on the X9
Park and Ride service running between Oxford's largest P&R, Redbridge, and the northern Pear Tree Park & Ride. The branding in this case was 'Gloria Glide', with buses featuring a picture of a six-foot female chauffeur and the slogan 'Park & Ride with Gloria Glide' – which generated accusations of sexism by the
University of Oxford. == Acquisition ==