The geological underpinning of archaeological sites (with AHOB members); clast lithological analysis, carbonate content and laser granulometry of Quaternary sediments (with Simon Lewis); the Scandinavian legacy in East Anglia’s Quaternary record (with Roland Vinx, Elmshorn, Germany); the life and times of Sir Jonathon Atkins, Governor of Barbados (1674–1680) (with Graham Harris, Prince Edward Island, Canada); the orientation of medieval English churches (with Hans Ketel, Rotterdam); and the natural history photographs of Hallam Ashley FRPS at Norwich Castle Museum, Norfolk (‘The Hallam Ashley Collection’) (with Nigel Larkin).