Viner trained to become a bus driver at a centre in Chiswick.
[1] She started her career in 1974, when London Transport were said to be 3,200 drivers short.
[2] She was based at the Norbiton bus garage, where she worked until its closure in 1993.
[1] In the weeks after Viner started driving, it was reported that thirty women had applied to become bus drivers.
London Transport began proactively recruiting female bus drivers in 1980, but over forty years later in 2021 it was noted that there are still relatively few female bus drivers.