George Pratt & Co, Streatham High Road. Pratt's department store was the largest shop in Streatham, situated in purpose-built premises called Eldon House from 1867. Later taken over by the John Lewis chain, the store closed down in 1990 and was demolished and rebuilt to house the Lidl supermarket and Argos store in 1996. The flags and decorations were to celebrate King George's Silver Jubilee in May 1935.