My favourite is the first story Dragon's Claw which puts he Doctor in medieval China. The slightly redundant assistant Sharon is married off about half way though the book, there are lots of idea that come from 2000AD. Indeed the TV show has borrowed from the comics for example, TARDIS in a junk yard, there's a story here with a Cyberman here which bears some resemblance the the 'Centre of the TARDIS' story in season 7 of the new Dr Who. Well worth a look if you remember the Dr Who magazine comics.
I read these as a kid in the 70's. They were thrilling stories in great comics. Re-reading them again now was'nt the thrill I was hoping for. It's a lot like reading Thargs Future Shocks but with a Dr Who theme. Not terrible, far from it, just a little 'basic'.