Wales Smoking Ban has no effect on heart attack rate.

While Smoke-Free St. Louis City is touting a controversial study that attributes a 13 percent reduction in the Scotland's heart attack rate to their smoking ban, a British citizen has obtained the heart attack numbers for Wales thru the Freedom of Information Act. Wales is about the same size as Scotland and got a smoking ban about the same time. The Wales smoking ban had no effect on the heart attack rate.

http://tobaccoanalysis.blogspot.com/2008/08/no-reduction-in-heart-attacks-in-wales.html