For those who follow football, you can now visit Chelsea FC's home stadium in SWAT4 with the Stamford Bridge custom map. As the author gohnarjohn describes, this is not a proper map because I believe you can only run around the field and there aren't extra rooms or stands that you can explore. There are a few civilians you can deal with though (if one of them represents Jose Mourinho, you could shoot him).
The second map - Sky Tower Offices - was created by induktio and is more complex, with different entry points and many suspects. There are also a few easter eggs in this map, one of which could cause you to die very easily if you are not careful. It is well worth a look and the download links for both of these maps can be found below (tested working on 1.0).
