Hello @Fred_M, I've been looking into these Dixons releases from the ZX Spectrum side and I think you might be interested in some of the information I've discovered. Firstly, your Ten Little Indians is not a Dixons release - it's an original Paxman Promotions. As shown here, Paxman re-released all the Mysterious Adventures but they made their own artwork for them rather than re-using the Channel 8 Software covers. Secondly, some of your tapes don't say "Dixon's Pack" - that's because they're not from Dixons packs, but they are otherwise identical. For example, here's a Waxworks that's not Dixons: So, there's a company that was providing titles for Dixons and selling standalone versions. There's an overwhelming amount of evidence that that company was Tynesoft. The Dixons Pack titles I've found are: from Artic Computing: Bear Bovver (SPEC/C64), 3D Combat Zone (SPEC), Spectrum Chess II (SPEC), Mr. Wong's Loopy Laundry (SPEC), Mutant Monty (SPEC), Monkey Biznes (SPEC), World Cup Football (SPEC), Millimon (SPEC), Engineer Humpty (C64) from Tynesoft: Bingo (SPEC/C64), Fireman Fred (SPEC), Super Gran (SPEC/C64/AMS), Climb-It (AMS), Munch-It (AMS), Olympiad (C16), Rig Attack (C16), Zap Em (C16) from Micromega: Codename MAT (SPEC/AMS), Haunted Hedges (SPEC), Starclash (SPEC), Braxx Bluff (SPEC), A Day in the Life (SPEC), Jinn Genie (C64) from Walltone Software/Callisto Computers: Cybo Run (SPEC), Frog Hopper (SPEC), Wally Kong (SPEC), Artist (ATARI), Cannibals (ATARI), Electric Starfish (ATARI) from Alligata: Here Comes the Sun (SPEC), Son of Blagger (SPEC), Blagger (C64), Eagle Empire (C64), Bat Attack (C64), Bug Blaster (C64/ELK/AMS), Haunted House (C64), Killerwatt (C64), Panic Planet (C64) from Adventure International UK: Waxworks (SPEC/ATARI), Sunday Golf (ATARI), Tutti Frutti (ATARI), The Golden Baton (ATARI) from Samurai Software: Castle of the Skull Lord (SPEC/C64), Rooster Run (AMS) from Microdeal: Pengon (ATARI), Mr Dig (ATARI), Cuthbert Goes Walkabout (ATARI), Danger Ranger (ATARI) Bug Off (ATARI) from Software Invasion: Vortex (ELK), 3D Bomb Valley (ELK) from Creative Sparks: Special Delivery (ATARI) plus double packs for the Spectrum of: Combat Zone + Spectrum Chess II, Cybo Run + Super Gran, Frog Hopper + Codename MAT, Haunted Hedges + Waxworks, Millimon + Wally Kong Tynesoft themselves re-released titles from Alligata, Artic Computing and Software Invasion so they certainly had licensing agreements with them. They were distributors for Adventure International UK, which was Mike Woodroffe's company - and he also owned Callisto Computers. Tynesoft also re-released the Mysterious Adventures "Escape from Pulsar 7" and "The Time Machine" on the Spectrum, the rights for which had been bought from Channel 8 by Adventure International in 1985. Just like Waxworks, they've re-used the Channel 8 Software artwork, but removed the "from Channel 8 Software" part. Very cheaply produced, like the Dixons Pack titles, but it's easy to print very cheaply when you own a printing works like Tynesoft did. Dixons Packs also included three Micromega titles from Derek Brewster, a known associate of Tynesoft, who went on to set up Zeppelin with ex-Tynesoft programmer Brian Jobling.
If that wasn't enough, Tynesoft provided Dixons with titles for their ZX Spectrum +2 bundles in 1986: On the left is Tynesoft's Witchfiend/Odd Job Eddie double pack, on the right is the Dixons Haunted Hedges/Waxworks release. Certainly very similar! Then there's the Atari Tynesoft catalogue:
The C16 and Electron catalogues also have the same titles for sale that were bundled with their machines "Dixons Packs".
All of this is circumstantial, there's no definitive proof that Tynesoft were behind the Dixons titles, but I'm convinced they were!