Duffy associates

1 Alma Road, BR5 4PT

21 Hanover Street, London, W1S 1YU

Douglas Houghton House, 231 Vauxhall Bridge Road, London, SW1V 1AD

224 Iverson Rd, London, NW6 2HL

71–75 Shelton Street, London, England, WC2H 9JQ

20-22 Wenlock Road, London, N1 7GU

SAP Calculations Ltd, 60a St Martins Lane, Building Compliance Services Dept, Covent Garden, London,, Greater London, WC2N 4JS

108 Westleigh Ave, London, SW15 6UZ

124, 128 City Rd,, London, EC1V 2NX

16 Hanover Square, London, W1S 1HT