Perry and Dave do apparently appear together on the new Sleaford Mods record. From https://www.nme.com/news/music/sleaford ... ll-3381685:
The album also comes with a surprising high profile guest turn from rock legends Perry Farrell and Dave Navarro of Jane’s Addiction on dark dance-punk of ‘So Trendy’.
“[Farrell] got in touch and said he wanted to write a song, so we said, ‘Yeah! Why not?’” recalled Williamson. “Myself and Andrew are not extensive Jane’s Addiction or Porno For Pyro fans, but we recognise he’s always been a very cool person. He added a brightness to the song, even though it’s not bright. It just feels like it has opened up the idea of what we do a bit more.”