Welcome to ISAN UK
ISAN (International Standard Audiovisual Number) is a voluntary numbering system for the identification of audiovisual works. It provides a unique, internationally recognised and permanent reference number for each audiovisual work registered in the ISAN system. The ISAN number remains the same for an audio-visual work regardless of where it is used, with associated version numbers (V-ISAN) available for different edits and formats of the underlying content.
ISAN UK is the appointed registration agency for ISAN in the UK.
ISAN is the content identifier for AACS encryption, which means all Blu-ray & HD-DVD release must have an ISAN number.