Well Napalm Death get credited for it
Probably because in 1989 when that episode was made Bill Steer was playing guitar for Napalm Death.
( Peej, Tue 1 May 2012, 11:37, 2 replies, latest was 12 years ago)

I thought Raging Speedhorn cameod in a later episode?

( Naked Ape call me Caitlyn, Tue 1 May 2012, 11:39, Reply)

The Cheeky Girls are going to cameo in the new series

( Peej, Tue 1 May 2012, 11:42, Reply)

They will increase that talent of actorrs on that show by a factor of 10

( Naked Ape call me Caitlyn, Tue 1 May 2012, 11:45, Reply)

And they will say smeg in that cute forrin voice they have
They turned on the Christmas lights in my home town a few years back

HOW DO YOU LIKE THAT FACT FANS!
( Peej, Tue 1 May 2012, 11:50, Reply)

He was still playing for Carcass at the same time, as was Jeff Walker

( Agnostic Antichrist Baltimora, Tue 1 May 2012, 11:43, Reply)

Yes
But in the credits it said Napalm Death, not my fault, I just offered a possible explanation as to why they made a mistake. I'LL FUCKING EDIT IT JUST FOR YOU!!!!
( Peej, Tue 1 May 2012, 11:44, Reply)

Not disagreeing with you, simply remarking that it's a bit odd.

( Agnostic Antichrist Baltimora, Tue 1 May 2012, 11:46, Reply)

THERE NOW IT MAKES SENSE! HAPPY NOW!
WHEN I GO HOME AND BEAT MY WIFE AND KIDS IT WILL BE YOUR FUCKING FAULT!
( Peej, Tue 1 May 2012, 11:48, Reply)

odd UTTERLY FUCKING TEDIOUS AND BENT
( Reginald Donkeyfuck, Tue 1 May 2012, 11:48, Reply)

Fuck you fake quinten
you are worse than the real quinten and he's fucking shit
( Peej, Tue 1 May 2012, 11:49, Reply)