Tremlett was an all-rounder, a right-handed batsman and right-arm medium pace bowler, who had a first-class bowling average of 23.99 and a one-day average of 24.69. He played from 1976 until 1991, and helped Hampshire win the Sunday League title in 1978 and 1986.
Tremlett was a versatile cricketer, capable of batting as a right-handed batsman and bowling right-arm medium pace. He had an impressive first-class bowling average of 23.99 and a one-day average of 24.69.  He played for Hampshire from 1976 to 1991, contributing to their victories in the Sunday League in 1978 and 1986.