Bob the Builder's Playtime Fun! contains both British English and American English versions. The app detects which Language your device is set to and adjusts it's sound output accordingly.

The release version of Bob the Builder v1.0 selected English VO if the language setting on the device was set to British English.

Version 1.1 is now available as a free update to download from iTunes/AppStore. This has revised region detection to cure previously reported issues.