In the 1920s Clewer Mill House was the home of a Mrs Moscockle who used to dress like Queen Mary and wave regally to pedestrians from her Rolls-Royce as she was driven around Windsor.
[4] Clewer Mill Stream was once a popular haunt of schoolboys from nearby Eton College although it was, along with the Thames itself, officially out-of-bounds and a punishment of 100 lines could be given by a sixth former to any "lower boy" (roughly the first two years) caught "shooting [water birds] in the Clewer Stream".
[6] The 165-acre (0.67 km2) tract of land between Clewer Mill Stream and the main channel of the Thames is a meadow called The Rays[2] which has been used for horse racing meetings since 1866.
[7] The upstream part of Clewer Mill Stream from Bush Ait forms the entrance channel to Windsor Racecourse Marina, providing a maximum draft of 11 feet (3.4 m), but much less during drought.
The downstream section, below the marina is unnavigable by powered craft except for a short reach from the mouth of the stream upstream to Clewer Boatyard.