The maximum stake on highly addictive fixed odds betting terminals is being cut to just £2 on Monday.
It is a success for the Mirror, which has campaigned for these new regulations.
FOBTs, which had limits set at a £100, have been dubbed the “crack cocaine of gambling”.
Nola Leach, boss of social policy charity CARE, said: “It is great to see the needs of gambling addicts put before the interests of bookies.
“But there is much more work that needs to be done.”
FOBTs offered a toxic combination of high-speed play and a high maximum stake where you could lose £300 in only one minute.

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Culture Secretary Jeremy Wright said: “Reducing the potential loss per spin to £2 is a significant step in protecting vulnerable people.”
Stricter identity and age check rules for online gambling will also come into effect from May.

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CARE now wants a statutory tax on betting firms to fund support for those with problems.
Ms Leach added: “The Government must address gambling-related harms.”