Morrissons have a 28mm Helicopter for sale at £2.50. Scale is somewhat debatable but I would put it around1/50 to 1/48 so would fit most ’28’mm heroic zombie game figures such as Zombicide etc.
The model is a die cast Service Helicopter with security decals and an emergency recovery ‘boat’ (unsure how best to describe it).
It appears that there is a second helicopter for a TV company available (but not yet seen).
I wanted to quickly highlight the amazing resource which can be found at;
http://papermau.blogspot.com.br
There are some great buildings and vehicles available for 1/50 so suitable for 28mm wargaming. I can see myself using them for zombie games but assume equally suitable for almost anything in the last 100 years.
These would be good for Malifaux or similar;
http://papermau.blogspot.com.br/2011/06/old-brazillian-sobrado-velho-sobrado.html
http://papermau.blogspot.com.br/2011/07/lakes-house-refuge-with-some.html
http://papermau.blogspot.com.br/2011/08/st-michael-old-chapel-by-papermau.html