Recent work has brought together what we know of the Anglo-Saxon and medieval cathedrals beneath and around Wren's St Paul's, the City of London's most important historic building and monument.

Now the little-known medieval cathedral, destroyed in the Great Fire of 1666, can be revealed as of European importance. It dominated the City and should be compared with other cathedrals - Ely, Norwich and Winchester.

Part of the Mondays at One Autumn Series.

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