The Bring It All Back singer - who rose to fame as part of the pop group in the early 00s - was declared bankrupt in 2014 and is now selling psychic readings online.
Cattermole, 44, has dubbed himself Psychic Wizard on his social media channels and claims to have trained and qualified as a professional psychic, offering his services in paranormal investigation and clairvoyance, as well as spiritual and tarot readings.
The Show Me Your Colours singer has even signed up to a premium rate phone line Ask The Answer, offering readings at a cost of £39.95 for 20 minutes.
Cattermole says on his profile: "I have an abundance of experience and knowledge to share with you from my days in pop band S Club 7 to my present role as a spiritual psychic where my reputation over the years has earned me the title of Psychic Detective.
"You can ask me ANYTHING (except for what is not allowed via the terms and conditions of the website!) Using and working with energy is my zone of genius.
"I like my readings to be uplifting and fun but I can also offer empathy and compassion for all sorts of situations."
Cattermole has been out of the spotlight since he appeared on Channel 4 dating show First Dates Hotel in 2019.
He made headlines shortly before his appearance on the show when he claimed he and bandmate Hannah Spearitt were pushed into a relationship by their management.
The Reach singers - who met as teenagers in the National Youth Theatre - began dating two years after the band launched in 2001 and stayed together until 2006.
They dated again for several months in 2015, when all seven members of the pop group reunited for a comeback tour.
Cattermole made headlines in 2018 when he sold his Best Newcomer BRIT Award from 2000 on eBay, raising an impressive £66,100.
Watch: Rachel Stevens answers S Club trivia