Today I have received a PM from an ex-colleague of Paul who gives this detail :-
For months I and others have feared the worst, and now we have confirmation of the situation. Paul has already been missed since January. The method named after him .... the ppron method .... a possible way of applying for Naturalisation at a British Mission outside the UK ... stands as a fitting epitaph to his undoubted knowledge of matters, especially relating to, as his ex-colleague says in their PM to me, "British Nationality and Immigration laws". Paul was a lecturer on those subjects and clearly had great experience.Paul died suddenly of a heart attack on the weekend of 6/7 January 2007 and was discovered at home on Tueday 9th January, following his absence from previously arranged appointment.
A sad loss.