It may have been published in 2004 but it remains the only book of its type on British civil projects.
An expanded and updated version would be most welcome addition, but I guess that's unlikely.
I like how it followed the layout of Tony's BSP series that came out around the same time with the manufacturer appendix at the back, while still fitting in with Tempus' paperback format. In their own way Tempus (now History Press) have done a lot for secret projects and esoteric aviation titles over the years, like John Forbat's Vickers books and submarine carriers etc.