Sian Welby is from Upton, a small village in Nottinghamshire, England. She attended Minster School, Southwell. She began presenting at 19, and she was still working part-time as a shop assistant for New Look when a starring role in an advert for New! Magazine, led to her being spotted by former Channel 5 owner Richard Desmond in October 2010. She was unveiled as the new face of Channel 5 News in November.
Joining Channel 5 News in November 2010 Sian Welby has also worked regularly on the OK Magazine programme. Sian Welby also presents The Health Lottery draws every Saturday, Tuesday, Wednesday and Friday at 9.55pm on Channel 5.
Sian Welby hosts the Revolution cycling show series for Channel 4, alongside co-worker from 5 News, Matt Barbet. She presented her first documentary, Sarah Store’s Longest Hour on Channel 4 in 2015. Previously Sian Welby has presented cycling shows for BT Sport, Eurosport and ITV4 and is the female face of Electronic Arts. Since 2015, she’s been a columnist for OK! Magazine with her Wellbeing with Welby column.