Coloured glass was first made in England in 674 AD in a monastery in Sunderland ( Northern England). It was used extensively in medieval churches from the 12th to the 16th Centuries. Revived in the mid 19th century for the Victorian building boom, it can be found today in the vast majority of churches of all denominations the length and breadth of Britain and throughout the world.          Today mouth blown glass is produced locally to the Art of Glass, using the same techniques perfected by the glass makers of yesteryear. A close working relationship exists between mouth blown glass producers and The Art of Glass, which enables batches of glass to be produced to our specification for that special commission. (See Diana Princess of Wales Children's Hospital)