Duffy associates

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

16 Hanover Square, London, W1S 1HT

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

20-22 Wenlock Road, London, N1 7GU

16 Battersea Park Rd, Nine Elms, London, SW8 4LS

6 Scrubs Lane, London, NW10 6RB

9 Pensbury Street, London, SW8 4TL

Office 16, 203-205 The Vale Business Centre, Acton, W3 7QS