There are regular dinners throughout the year:
The Annual Dinner - held in Nottingham, usually towards the end of March.
The London Dinner or Reception - usually in November.
The Oxford Dinner - organised by an undergraduate at Oxford and held at one of the Colleges, usually in February.
The Cambridge Dinner - organised by an undergraduate at Cambridge and held at one of the Colleges, usually in April/May.
The Northern Dinner (inaugurated in 2007) - held, as the name implies, in a more northerly location (2007 - Fulford Golf Club, York) to enable ONs living in the north to more easily attend.
All events are open to all members, subject of course to space at the venue, and relevant details of venue, organiser, etc will appear at the appropriate time in the Social Calendar found on this site.
The Annual Dinner, the London Dinner, Oxford and Cambridge are Black Tie events; the London Reception and the Northern Dinner are lounge suit events.