Avoncroft Museeum of Historic Buildings near Bromsgrove in Worcestershire is home to The National Telephone Kiosk Collection. The display is by far the most comprehensive collection in the country and includes examples of all of the K series boxes and well as emergency services boxes and a few other oddities. If you have any interest in telephone boxes at all, it is well worth a visit. My last visit was in 2009 so the collection could well have grown since my photographs were taken.