 St Mary's Church in Greywell is part of the United Parish of Newnham with Nately Scures with Mapledurwell with Up Nately with Greywell, which in turn is part of the North Hampshire Downs Benefice in the Church of England Diocese of Winchester.Greywell is within the Anglican United Parish, which is served by St Swithun's, Nately Scures.The Basingstoke Canal runs beneath the village through the Greywell Tunnel, a tunnel built in the late 18th century.