Jack Ryder now lives in France as well as UK and is writing Childrens books. He was directing musicals for a while, I know he did some work with Gary Barlow.
He was also in Holby City fairly recently (2019/2020 I think) but his character Evan was killed off. I didn’t even recognise him when he first appeared in it!
The kids who were in the US tv show ‘The Middle’ (Axl, Sue and Brick)?
Ann Maurice (the house doctor interior designer)?
Some of the big brother ‘stars’ you used to hear about and were in Heat magazine etc all the time like Chantelle Hougton, Nadia, Brian Belo etc?
Samantha Ronson, at one point she was always in the media when dating Lindsay Lohan?
Some other singers who were touted to be the next big thing and I haven’t heard anything about them for ages - Corrine Bailey Rae, Sandi Thom, Emilie Sande?