Oliver “Ollie” Hart is the Head of Slot Analytics at BonusBuySlots.co and one of the UK’s most trusted voices on volatile feature-buy games. Armed with an MSc in Statistics from the University of Kent, Ollie spent a decade inside tier-one studios and operators—most notably four years at Gamesys, where he audited RTP configurations and wrote internal volatility guidelines used to launch 200 + titles across the UKGC market. Fascinated by the maths behind extreme multipliers, he switched sides in 2021 to become an independent consultant, helping streamers and affiliate publications translate complex slot mechanics into plain English. His breakdowns have appeared in EGR Intel, CasinoBeats and on the GamblingInsider Podcast. Ollie holds a UKGC Personal Management Licence and a CPD-certified qualification in Advanced Responsible Gambling. That mix of compliance know-how and number-crunching lets him rate slots on three pillars: fair edge, sustainable volatility and regulatory transparency. At BonusBuySlots.co he reviews every new Bonus-Buy release, running 5 000-buy simulations to verify advertised RTP and hit frequency. He also spearheads the site’s Responsible Gambling hub, ensuring every strategy guide includes loss-limit advice and GAMSTOP signposting. When he’s not analysing reel strips, you’ll find him mentoring university maths grads who want to enter iGaming or playing five-a-side football in East London—where, he admits, his strike rate is far lower than his slot ROI. Contact: [email protected] | LinkedIn @OllieHart-iGaming | Twitter @OllieSlotsUK