http://www.amazon.co.uk/Skinhead-ebook/dp/B009B9X508
There's quite a few of his other books on there too. They all have the original NEL covers with the NEL logo airbrushed out, there's no copyright/publisher information, and there has been no news anywhere that these were going to be re-released in any form.
Skinhead Times were the last publisher (mid-90s), they have been releasing some of their non-fiction titles on Kindle but said a while ago that James Moffatt had no surviving family so they wouldn't be able to re-release his Richard Allen books.