Jo O'Meara was the lead singer, she recorded the old Robert Palmer song "Every kind of people" which is on the soundtrack of the film "The Guru". The last I heard she was supposed to be going into the studio to record country music.
As is mentioned above, Hannah Spearritt has been doing a bit of acting. Rachel Stevens is the only one who has had any chart success so far. Tina Barrett has seemed to disappear.
As for the boys, Paul Cattermole was to form a band, but I havent heard any more about that. Jon Lee has been on stage in the Westend. Havent heard anything about Bradley McIntosh, but his parents were in a band in the 80s called the "Coolnotes", they were a pretty good band who had a few hits.