The Parramata-Ryde Bus Service trading name was adopted in the 1950s, with the charter operation becoming Trailer Tours.

[7] On 1 June 1993, Kennedy sold his share in the business to North & Western Bus Lines proprietor Ken Butt.

[2][9] On 13 December 1999, Butt's share in the business was included in the sale of North & Western Bus Lines to the State Transit Authority.

On 28 February 2000, Ivan Ferris also sold his share to the State Transit Authority with the operation incorporated into its Ryde depot.

Until 1987, Parramatta-Ryde built its own bodies on Whites, AEC Reliances, Leyland Leopards and MAN SL200s.