Oliver Grant is the UK’s leading expert on classic slots and the Chief Analyst at classicslotsonline.co.uk. He was previously the Lead Technical Auditor of Gaming Systems at Microgaming and a Collaborating Consultant for several UKGC-regulated studios (2014–2022). He has been directly involved in the validation and re-certification of iconic Golden Age slots, including the famous fruit and mythological series, adapted for modern RNG systems. Oliver holds certifications from the iGaming Academy (Advanced Slot Mechanics), the University of Malta (Responsible Gaming Compliance, Level 5) and is fully compliant with the UK Gambling Commission’s technical standards. He developed two unique analytical techniques that are now used for internal audits: Reel Legacy Mapping (detects deviations in the behavior of classic reels after updates) and Payout Rhythm Index (analyzes the cyclicality of payouts over long sessions). Today, Oliver applies these systems, along with over 120,000 controlled spins on every slot available on the UK market, to accurately determine bonus behavior, real-world volatility, and compliance with the stated RTP. Only UKGC-licensed online casinos that use original game versions with transparent math and responsible gaming tools receive his recommendation and trust mark.