In a nutshell, NE did a gig at London Subterranea in 1989 or1990 (great gig by the way I think it is available on DVD every so often on ebay) and shortly afterwards a comic strip "Bradley goes gigging" appeared in 2000AD magazine of that gig with Bradley attending and causing mayhem at said gig.
The following link is reprinted below http://www.2000ad.org/thrillpower/2kad1.html and the article in question can be bought in reprint form from here http://www.2000adonline.com/?zone=reprint&page=profiles&choice=CLAS2K2
BRADLEY
Creators: Alan McKenzie & Simon Harrison
27 episodes: 1987-88, 1990, 1992-1994
Bradley is a bizarrely-drawn "sprog," a troublemaking menace like Dennis, but in a future world of strange technology and stranger grown-ups. The series, written by eventual editor Alan McKenzie, went through a number of formats over the years. The first five stories were "Dennis the Menace"-styled bits of mayhem. The next five showed Bradley and his cohorts Milton and Annabella looking into the world of music. The next two stories dealt with Bradley's incarceration for juvenile delinquency and escape. The next seven, tagged as "Bradley's Bedtime Stories," were Bradley's rude retellings of fairy tales. Finally, Bradley had a few short series which were generally quite unpopular with fans.
Top moment: You either loved Bradley or hated him, unless he was taking the piss out of Andrew Eldritch of the goth band Sisters of Mercy, in which case every 2000 AD fan adored him. Prog 666's "Bradley Goes Gothic" had Bradley attempting to interview an uncooperative, stone-faced Eldritch about goth music. Artist Simon Harrison helpfully included notes to Eldritch in the panel borders about dealing with his rock-hard facial muscles.
Reprinted? This series has never been reprinted. You'll need the original progs.
Alternators, prog 533 (Aug. 1987). Story by "Sydney Falco" (Alan McKenzie), art by Simon Harrison.
Bradley's Birthday, prog 545 (Oct. 1987). Story by McKenzie, art by Harrison.
Bradley and the Bandit, prog 552 (Dec. 1987). Story by McKenzie, art by Harrison.
A Krissmas Karrol, prog 554 (Dec. 1987). Story by McKenzie, art by Harrison.
Bradley and the Toboggan Race, prog 606 (Dec. 1988). Story by McKenzie, art by Harrison.
Bradley Visits His Granpappy, prog 660 (Jan. 1990). Story by McKenzie, art by Harrison.
Bradley Meets Jason Donovan, prog 661 (Jan. 1990). Story by McKenzie, art by Harrison.
Bradley Goes Gothic, prog 666 (Feb. 1990). Story by McKenzie, art by Harrison.
Bradley Goes Gigging, prog 670 (Mar. 1990). Story by McKenzie, art by Harrison.
Bradley Goes Mental, prog 682 (June 1990). Story by McKenzie, art by Harrison.
Bradley and the Social Worker, Winter Special 3 (Dec. 1990). Story by McKenzie, art by Harrison.
The Great Escape, prog 795 (Aug. 1992). Story by McKenzie, art by Harrison.
The Little Were-Maid, prog 796 (Aug. 1992). Story by McKenzie, art by Harrison.
The Ice Queen, prog 797 (Aug. 1992). Story by McKenzie, art by Harrison.
The Nightingale, prog 798 (Aug. 1992). Story by McKenzie, art by Harrison.
The King's Birthday Suit, prog 799 (Aug. 1992). Story by McKenzie, art by Harrison.
The Frog Prince, prog 825 (Mar. 1993). Story by McKenzie, art by Harrison.
Milton's Progress, prog 826 (Mar. 1993). Story by McKenzie, art by Harrison.
Hansel & Gretel, prog 827 (Mar. 1993). Story by McKenzie, art by Harrison.
The Sprog Prince, 4 episodes, progs 885-888 (Apr. to May 1994). Story by McKenzie, art by Harrison.
Master of Martial Arts, 3 episodes, progs 901-903 (Aug. to Sep. 1994). Story by McKenzie, art by Harrison.
Bradley & the Baby Sitter, 1995 Yearbook (Oct. 1994). Story by McKenzie, art by Harrison.