This is an increasing trend at football grounds.
At least half a dozen clubs allowed people outside to smoke at away games last season.
Some clubs, like Barnsley, always allowed it as they have a large open area. Others, like Peterborough, say your not allowed, but ignore smokers in the outside areas. Others, like Forest, allow you outside the ground to a fenced off area, where you can smoke, drink and buy food.
This was discussed at the FLAG meeting, as the club want people to arrive at games earlier and leave later and they're not going to achieve this if people are gagging to get out the ground for a cig at the end of a match.