While there are scans of the GW White Dwarf articles on various Dredd yahoo groups, I'm not sure that anyone has permission to scan and distribute those files. You would be better off seeking out copies of the old issues on Ebay.
You say you just had Judgement Day... you do have all the Mongoose books, right? If not, you should take a look at those. There have been some great articles in S&P, but "The Awakening" was a superb scenario, and the last book published for Judge Dredd d20 RPG.
The Kazan Gambit was a nice trilogy for new judges as well.
Lastly, Drokk City is an excellent resource, and is the best thing out there right now. Marc Farrimond used to run Dredd Times as well, which had a few good articles and if I remember right, a scenario or two. Unfortunately, the site has been down for months now and I think Marc has been too busy to get it back in place.
Arabin