As of February 2026, the United Kingdom has fully transitioned into the "Legal Big Puff" era. Following the legislative shifts of 2025 that phased out traditional single-use disposables, British vapers have pivoted toward modular, high-capacity systems that offer extreme longevity while remaining strictly TPD-compliant. Standing at the peak of this innovation is the Hayati shisha 30k (the Hayati Pro Ultra Plus 30000), a device that has redefined the high-puff category for the modern era.