The Silver Jubilee Window is located in the Side Chapel on the south side of the Church. (Click on the image to enlarge)
The banner at the top reads:
'If Any Man Serve Me Let Him Follow Me'
The inscription at the bottom reads:
To commemorate with thankfulness to Almighty God the many mercies bestowed on the church & parish since it's dedication 30 March, 1912 and to mark their Silver Jubilee 1937-1938
The wording in the banner comes from the Bible: John 12:26a (KJV)