Caleys held two royal warrants, at the time of the closure, as 'supplier of household and fancy goods' to Her Majesty The Queen and as 'supplier of household and fancy goods and millinery' to Her Majesty Queen Elizabeth The Queen Mother.
This takeover of Caleys helped the Mackintosh company to expand its range of products notably changing its reliance on toffee to products with chocolate toffee such as Quality Street in 1936 and Rolo.