Mott and Hay
1902 Basil Mott formed a partnership with David Hay.
Mott and Hay worked on extending the Central London Railway, the building of escalators in London Underground and the construction of Southwark Bridge. Also designed the underpinning required to stabilize Clifford's Tower in York.
1923 David Anderson became a partner in Mott and Hay - hence Mott, Hay and Anderson