He decided its thematic and geographic division into 21 volumes but in 1981 he was made redundant as part of an economy plan.
[2] Negus was a major contributor to the long-running series The Connoisseur catalogue of Machin stamps.
[2] Negus was a member of many philatelic societies and contributed numerous articles to their journals.
[2] In 2000, Negus stopped all philatelic activity and sold his book and stamp collections in order to concentrate on non-philatelic interests.
[2] Ron Butler, President of the Royal Philatelic Society London in the 1970s, described him as "the best of bibliographers and [...] the most competent of researchers".