This is going to lead to a lot of people gambling £5 a spin on unregulated casino’s… Winning 20k.. then never seeing a penny of it.
They would have been better, to enforce maximum gambling amounts based on salary.. for example, You provide a source of wealth, say a payslip, that shows you earn 100k per annum. They then set you max monthly deposit based on a formula based on that. minus any withdrawals.
It wouldn’t stop you having multiple accounts with different casino’s.. but if they really wanted to control it, you could divide that sum by the number of online casino’s that you are signed to.