Online gambling will face new curbs while rules for bricks-and-mortar casinos will be relaxed under government plans to be announced tomorrow.

Ministers will publish the long-awaited gambling white paper, which will include proposals for a new levy on gambling companies.

Ministers will consider a “polluter pays” tax on the industry, with a consultation on forcing large companies to pay 1 per cent of any profits.

However, plans to introduce maximum stakes for online slot machines of between £2 and £5 for all customers have been watered down. They will be limited to £2 for those aged under 25 and £15 for those who are older. Online stakes are not limited at present.

Ministers are also expected to announce plans to announce “light-touch” checks for those