The Big Boss 4K: Limited Edition (UK)

Disc One

• Commentaries
  
  • Commentary by David Desser
  • Commentary by Brandon Bentley
    
• Alternate Versions
  
  • English Export Cut (HD; 1:40:27) is a "newly assembled reconstruction" that occasionally features Mandarin with subtitles, and other moments with burnt in subtitles.
  • US Theatrical Cut (HD; 1:39:53) is also a "newly assembled reconstruction" and has occasional burnt in subtitles.
    Return to Thailand (HD; 41:58) is a fun visit to locations hosted by Matt Routledge.
• Deleted and Extended Scenes (HD; 18:13) feature footage thought lost for decades from the sole surviving print of the Mandarin theatrical release.
• The Not Quite Biggest Boss (HD; 8:25) offers Brandon Bentley's review of footage that is still missing.
• Archive Interviews are subtitled in English:
  
  • Lau Wing (HD; 44:41)
  • Tung Wai (HD; 2:45)
    
• Bruce Lee vs. Peter Thomas (HD; 2:27) offers Brandon Bentley again discussing Thomas' score.
• Alternate Credits Sequences
  
  • Japanese Release Credits (1974) (HD; 1:41)
  • US Theatrical Re-Release (1978) (HD; 1:33)
  • Alternate English Credits (HD; 1:45)
    
• Trailer Gallery
  
  • HK Theatrical Trailer (Mandarin) (HD; 3:48)
  • HK Theatrical Trailer (English) (HD; 2:50)
  • UK Theatrical Trailer (HD; 1:47)
  • UK Super 8 Trailer (HD; 4:08)
  • US Theatrical Trailer (HD; 1:35)
  • US TV Spots (HD; 1:16)
  • HK Re-Release Trailer (Cantonese) (HD; 2:25)
  • Before The Big Boss (HD; 5:59) is an assortment of trailers released after Lee's death for efforts like The Green Hornet.
  • The Big Boss Part II (HD; 3:40)
    
• Image Galleries
  
  • Publicity Stills and Lobby Cards (HD)
  • Behind the Scenes (HD)
  • Posters and Video Art (HD)

Disc Two (The Mandarin Cut)

• Axis of English: The Hong Kong Dubs (HD; 29:18) is an interesting piece by Will Offutt focusing on the voice actors who provided performances for the English language versions of some of the Lee films.
• The Mandarin Cut: Unrestored (HD; 1:49:12) is a "raw scan" of the last known surviving print of the Mandarin version.