Same riff. I never realized it until I read this article on Diffuser.
The Jam: In the City
Sex Pistols: Holiday in the Sun
(video is the album track, but set over concert video)
Great artists steal, they say. I love both songs - that song by The Jam really rips. It has a very The Clash-like feel to it, more than other Jam songs. And I love how abruptly it seems to end.
Holidays opens up with that same riff but it's powered up. It really sets the tone for Nevermind the Bollocks.
It's hard to not hear the In the City riff and I'm kind of surprised I didn't notice all these years.