THIS Nick Sharp (Google, on 2008-12-06 offered 10,400 items matching "Nick Sharp") resides in Australia and is a citizen of that great island continent, but is really a pommie. His career was in computer networking, most recently reworking the international network of Fuji Xerox.
The global financial crisis "retired" him in 2009, which gave him time to write:
http://archive.org/details/AZillionYearPlan...ForHumanity
and to create just for fun:
http://archive.org/details/YetAnotherSudokuSolverAid
which was a lot more interesting than actually solving any sudoku puzzles.
DECADES ago, he did a chemistry degree at Wadham College, Oxford. That's enough. Who cares anyway?