I seem to remember it being Dave Hungate. His line on Here Comes the Sun was too virtuosic in my opinion, compromising the song's beauty, but there's no doubt the man could play.
You're right. Don't know exactly how I missed that, Bascomb's name is written much bigger than David Hungate's, or Clive Chapman the other bass player. I guess that means Bascomb played most of the bass.