The UK gambling industry is mobilising against reports that Chancellor John Healey may double machine games duty from 20% to 40% in his first budget. The Social Market Foundation estimates the increase could raise £275m to £460m annually, on top of roughly £610m already collected. Andy Burnham, the most vocal political critic of slot machines, has already tightened licensing laws. The industry's response follows a familiar script. The Betting and Gaming Council commissioned EY to project up to 1,470 betting shop closures — nearly a third of the UK's 5,617 — with 15,900 job losses and a net £120m revenue loss to the Treasury. Betfred's billionaire owner Fred Done claims he'd close 495 shops, half his estate, shedding 2,475 jobs and £67m in taxes. Entain (Ladbrokes, Coral) warns of cuts across 2,300 shops. Rank Group (Mecca Bingo, Grosvenor Casinos) says a third of its venues could go. The trouble is, the industry has cried wolf before. Betfred had about 1,620 shops in 2019. Since then, Done has threatened to close nearly 1,000 in response to various regulatory changes. Most of those policies passed. Actual closures: roughly 330, largely driven by the structural shift to online gambling that has sent digital revenues soaring. Meanwhile, the Done family extracted £50m in dividends in 2022 alone. Bet365, which operates entirely online, recently blamed a duty increase for 300 job cuts at its Stoke headquarters — without mentioning its accelerating adoption of AI, which staff believe is the actual driver. That said, dismissing all industry concerns as bluff would be naive. Every major UK gambling firm — Betfred, Entain, Flutter — has announced cuts since Reeves's last duty rise. Disentangling tax effects from broader economic pressures and the secular shift online is genuinely difficult. Simon Thomas of the Hippodrome Casino says uncertainty alone has frozen a £6m expansion project. Some real economic pain is baked in. The sharpest problem is one of unintended consequences. The policy's primary target is the proliferation of 24-hour adult gaming centres (AGCs) — high-street slot farms with lower overheads and looser regulation than casinos or bingo halls. AGCs managed to increase takings from £528m to £613m last year by cramming more machines into larger venues. They are structurally the most resilient operators in any tax-increase scenario. Merkur, an AGC operator, has already offered to buy 132 shops Betfred put up for sale. So the likeliest outcome is perverse: a duty rise squeezes bookies, casinos, and bingo halls — which face genuine margin pressure — while AGCs, the actual target, absorb their real estate and expand. The tax generates revenue but reshapes the high street toward exactly the kind of slot-farm concentration the policy was designed to prevent. Treasury officials face a genuine design problem, not a binary choice. A blunt doubling of MGD treats all machine-gambling venues equally when their cost structures, regulatory burdens, and social harms differ sharply. Without differentiated treatment — higher rates for AGCs, lower for regulated casinos and bingo — the policy risks producing the worst of both worlds: job losses in the more regulated sector and growth in the least regulated one.