|Born||April 21, 1956|
|Highest ranking||19 (1988–1990)|
|Highest||134 (1985 World Championship qualifying)|
|Best ranking finish||Semi-final (1988 Classic)|
As an amateur, Newbury won the 1979 National Pairs Championship (with Cliff Wilson), and the 1980 Welsh Amateur Championship. At the 1980 World Amateur Snooker Championship, he was eliminated by Jimmy White in the quarter-finals.
Newbury turned professional in 1984. He was runner-up in the 1987 Welsh Professional Championship, defeated 7-9 by Doug Mountjoy; and reached the semi-finals of the 1988 Classic, losing 2–9 to Steve Davis.
- "Euro Player Profile: Steve Newbury (Wales)". globalsnookercentre.co.uk. Archived from the original on 28 November 2007.
- Hayton, Eric; Dee, John (2004). The CueSport Book of Professional Snooker: The Complete Record & History. Lowestoft: Rose Villa Publications. pp. 752–753. ISBN 978-0954854904.
- Morrison, Ian (1988). Hamlyn Who's Who in Snooker. London: Hamlyn. p. 77. ISBN 0600557138.