Smoking could be banned in the entrance to buildings - including pubs - under new government plans.
Health Secretary Andy Burnham announced today the government will review the smoking ban laws later this year, with a view to extending the areas it covers.
The Department of Health has yet to comment on reports this could include pub beer gardens.
The proposals also include forcing cigarettes to be sold in plain packets, a crackdown on cheap illicit cigarettes and a ban on cigarette vending machines, as already planned.
The government's aim to is to halve the number of smokers in the UK from one in five, to one in 10, by 2020.
Burnham said: "We've come so far and now we'll go even further - to push forward and save even more lives.
"Today's strategy renews our commitment to virtually eradicate the health harms caused by smoking, and I firmly believe we can halve smoking by 2020."
The Department of Health said the current laws around smoking have "huge public support" and "nearly 100 per cent compliance".
Christopher Ogden, chief executive of the Tobacco Manufacturers Association, said he welcomed a crackdown on the trade in illicit cigarettes.
But he added: "The government's dictatorial approach to tobacco control is hardly conducive to changing consumer lifestyle choices."