While shuffling through Youtube, I came across another BBC micro conversion, done for the ABBUC software contest in 2014. I don't know if you chaps have seen it, but I'm pretty much just posting any BBC micro or Spectrum to Atari conversions I come across. If I find the file to download, I'll link it here as well, but I just found this on Youtube, so just the link there right now. I have yet to see the original BBC micro version, but on the notes of this video, it does say it's been enhanced for the 8-bit. Some Spectrum and BBC games seem to be straight ports, and others enhanced.
OK, I looked up the BBC version, video link below, it looks about as fast as the A8 conversion, but it does look like they enhanced the color on the A8 version and added sound effects? At least going by the BBC micro Youtube video, it seems that version had no sound?