The Britpop icon, real name Mark Berry, appeared on the U.K. version of the fly-on-the-wall show in 2005 and walked away with the top prize as the eventual winner.
Now he has revealed his joy was short-lived - he had to hand over his entire winnings to the British government to pay off an outstanding tax bill.
He tells U.K. Tv show This Morning, "I did win Big Brother but it actually did me no good financially. Well, it did - because it managed to pay off a tax bill that I had. He (the tax man) took every penny of it."