Lacey, Sillar and Leigh
Consulting engineers, of 78 Queen St, Manchester and 2 Queen Anne's Gate, Westminster
Originally Lacey, Clirehugh and Sillar
1903 Clirehugh left the partnership which became Lacey and Sillar
It later became Lacey, Sillar and Leigh when Frederick Augustus Cortez Leigh became a partner.
1909 George Broughall became a partner