At one point, the Sex Pistols had broken up and then Sham 69 broke up.
So Steve Jones & Paul Cook (Sex Pistols) joined up with Dave Tregunna & Jimmy Pursey (Sham 69) teamed up and made music.
Here is Natural Born Killer.
It's not clear what they were called, if anything, but they've been retroactively named the Sham Pistols. Which is as accurate as it is ironic, really. They really rock in a way that's very much a blend of the two bands. You can hear so much of the Jones/Cook blend you got in the post-Rotton pistols music with that later Sham 69 vocals.