MacColl and Pollock
of Wreath Quay Engineering Works, Sunderland. Same as Wreath Quay Iron Works?
Also listed as MacColl and Co
1894 Established by Hugo MacColl and J.T.Jameson
1895 Business traded as MacColl and Pollock
1903 Incorporated as MacColl and Pollock Limited
1914 Marine Engineers and Boiler Makers. Specialities: Supplying and Fitting Marine Engines and Boilers, Repairing Ships and Machinery. Employees 500. 
1935 Voluntary liquidation