Rob Allan is based at the Met Office Hadley Centre where he leads the international Atmospheric Circulation Reconstructions of the Earth (ACRE) initiative (http://www.met-acre.org). Old Weather is a part of the international outreach arm of ACRE.
Philip Brohan is a climate scientist at the Met Office Hadley Centre, where he tries to combine information from old documents, tree-rings and large computers, into a clear picture of what the weather used to be like.
Lucinda Donnachie is a Digital Project Manager at the National Maritime Museum. She manages the Museum's collections website as well as crowdsourcing projects.
Chris Lintott is an astronomer at the Adler Planetarium in Chicago, although he can normally be found at the University of Oxford. Having encouraged hundreds of thousands of people to classify galaxies with Galaxy Zoo, he leads the Zooniverse team. He's also partial to a really nice glass of Riesling.
Stuart Lynn is an astronomer and the main Zooniverse developer for Old Weather.
Arfon Smith is an astronomer turned software developer based at the University of Oxford. In his role as Tech lead of all things Zooniverse he manages the software team that built this thing.
Gordon Smith, a one-time engineer, military operations analyst and human relations manager, lost his father in action at sea in 1943. Wanting to discover more, he wrote a couple of naval history books in his 40's and then started Naval-History.net to help others do the same. Long-retired, he loves sailing.
Clive Wilkinson is research manager for the Recovery of Logbooks and International Marine Data (RECLAIM) Project http://icoads.noaa.gov/reclaim, a part of NOAA's Climate Database Modernisation Program. He is based at the Climatic Research Unit at the University of East Anglia.