Yeah that would be Extras which came out about 10 years ago if I remember rightly.
Most of that album is on the box set, there`s basically only 5 songs not included on the box.
Pop Art Poem
No One In The World
And Your Bird Can Sing ... all off Extras
Other than those 3 there`s just the single versions of Start & Precious.
I`ve also got The Jam at the BBC album , 2 Cds of sessions & interveiws with a bonus live album of a gig for the BBC thrown in free.
Best 7 quid I ever spent