MacLeans were a highly respected builder originally founded about 1919. They occupied a number of premises before ending up in Upper St., Islington. Among their offering was a very fancy lugged frame, the Apollo starting about 1954. They continued in the same hands right through to the early 1960s, until the firm succumbed in Nov, 1962 and the name was acquired by Holdsworthy Limited. (Thanks to Hilary Stone)