Alison Hammond – 49 lbs

Alison Hammond came to the spotlight in 2002 after joining Big Brother. Although she was the second participant voted out, it opened the door to her working on This Morning the following year. In fact, the 39-year-old still works for the ITV show today.

Hammond admitted that her heaviest weight was at about 20 stones. In 2019, she decided to make a change and joined WW (formerly Weight Watchers) as a brand ambassador. Aside from turning her eating habits around, Hammond also got a personal trainer and even showed her grueling workout on Instagram.