Sian can be heard on Capital’s flagship show Capital Breakfast with Jordan North, Chris Stark & Siân Welby weekdays 6-10am. 

In the TV world, 2021 saw Sian hosting an E4 Pilot called Kinky Daters exploring the more playful and inclusive world of dating. 

2020 saw Sian host Goodwood Speed Week for ITV alongside Dermot O’Leary and she spent half of 2017 jetting off around the world to host Channel 5’s Formula E: Street Racers Magazine show – The home of electric car racing.  

From 2010 – 2016 Sian was the daily face of Channel 5 weather and The Health Lottery. She hosted various programmes for EA Games and was one of the presenters of viral mobile game HQ Trivia. Along with this, Sian has also hosted numerous sports programmes, including Channel 4’s six-part cycling show, The Revolution, the Rugby World Cup for ESPN, and, the PGA Euro Pro Golf Tour for Sky Sports.

Welby is an active supporter of several charities including the Sick Children’s Trust and Leonard Cheshire Disability Centre.