Two of the U.K.'s biggest YouTube stars, Caspar Lee and Joe Sugg, have ceased ties with noted digital talent management firm Gleam Futures, the former roommates and frequent collaborators tell Tubefilter. In coming weeks, Lee and Sugg will announce a new business venture -- though they declined to provide any details."We've enjoyed our three years working with Gleam and we're very thankful for their support and we wish them all the best," the duo said in a statement provided exclusively to Tubefilter. They noted that their contracts at the London-based company have expired and they are opting not to renew. "With the creator platform constantly evolving, we have decided to fully immerse ourselves in a new business venture, which will be announced in the coming weeks. We're excited to share the next chapter in our careers."Visit Tubefilter for more great stories.