This church appears to have been restored by Sir George Gilbert Scott in around 1845-7, which included rebuilding the north porch and replacing windows with belfry-stage lancets.

http://www.british-history.ac.uk/report.aspx?compid=66326
http://www.churchplansonline.org/retrieve_results.asp?search_args=x%3DSPRATTON%7Cl%3DSPRATTON%7Cc%3DNorthamptonshire
http://www.crsbi.ac.uk/site/541/