David Griffiths is represented in public and private collections, including:

The American Embassy, London;

The House of Lords, London;

The British Association of Anaesthetists, London;

The Federation of British Anaesthetists, London;

The Association of Chartered Surveyors;

Speaker's House, Westminster;

The Linnean Society of London;

The City Hall, Cardiff;

Liverpool University;

Peterhouse College, Cambridge;

University of Wales, Cardiff, Aberystwyth,

Swansea and Bangor;