Chester Cathedral

Also known as Cathedral Church of Christ and the Blessed Virgin Mary, the current building dates back to the 13th century.

The building underwent a major restoration in 1868-76 by G.G. Scott, leading to its current high Victorian look.

A Salviati mosaic of The Last Supper from 1876 designed by J.R. Clayton decorates the high altar.

Salviati mosaics can also be found in the St. Erasmus Chapel of the cathedral.

Sources:
British Listed Buildings
Chester Cathedral
Colin Sabin's flickr Photostream

“The New Mosaic Reredos in Chester Cathedral.” The Art Journal (1875-1887) 2 (1876): 351.