- INTERNATIONAL ENGINEERING SERVICE HOLDING LIMITED- FIRMENWELTEN ACCOUNTANCY HOUSE 4 PRIORY ROAD, KENILWORTH, WARWICKSHIRE, CV8 1LL 
- GLENTWORTH PRECISION ENGINEERING (UK) LIMITED- NEW BRIDGE STREET HOUSE 30-34 NEW BRIDGE STREET, LONDON, UNITED KINGDOM, EC4V 6BJ 
- GREY OWL MANAGEMENT LIMITEDDissolved- 03197015 - Dissolved on 27 March 2018 
- M.A.H. BUILDING ENGINEERING SERVICES LIMITED- 31 HAZLEMERE DRIVE, GILLINGHAM, ENGLAND, ME7 2TE 
- GK LAND ENGINEERING (HOLDINGS) LIMITED- FAIR OAK CLOSE, EXETER AIRPORT BUSINESS PARK, EXETER, DEVON, EX5 2UL 
- CHS BUILDING & ENGINEERING SERVICES LIMITED- 5A LLOYDS WHARF, MILL STREET, LONDON, LONDON, UNITED KINGDOM, SE1 2BD 
- S C ENGINEERING (WORKINGTON) LIMITED- 6 PHEASANTS RISE, ARLECDON, FRIZINGTON, CUMBRIA, CA26 3XA 
- T&W CIVIL ENGINEERING LIMITED- 183 FRASER ROAD, SHEFFIELD, ENGLAND, S8 0JP 
- JSB ENGINEERING SERVICES (NE) LIMITED- 43 CONISCLIFFE ROAD, DARLINGTON, COUNTY DURHAM, ENGLAND, DL3 7EH 
- S D CIVIL ENGINEERING LIMITED- 39/43 Bridge Street, Swinton, Mexborough, South Yorkshire, England, S64 8AP 
- CHS BUILDING & ENGINEERING SERVICES LIMITED- AVERY HOUSE 8 AVERY HILL ROAD, NEW ELTHAM, LONDON, UNITED KINGDOM, SE9 2BD 
- REAL TIME SOFTWARE ENGINEERING LIMITED- AUDLEY HOUSE 13 PALACE STREET, LONDON, SW1E 5HX 
- LONDON ENGINEERING AND CONSTRUCTION LIMITED- 9 KNARESBOROUGH PLACE KNARESBOROUGH PLACE, LONDON, U.K., SW5 0TP 
- GREY LIMITEDDisolved- 04125873 - Dissolved on 12 October 2021 
- GREY FOX MANAGEMENT LIMITEDDisolved- 13669897 - Dissolved on 9 April 2025 
- MAN LURK MAN- Born October 1965 - 25 PARKFIELD DRIVE, NORTHOLT, UNITED KINGDOM, UB5 5NR 
- I B SYSTEMS ENGINEERING LIMITED- 44 TODD LANE NORTH, LOSTOCK HALL, PRESTON, LANCS, ENGLAND, PR5 5US 
- ARGSOFT SALES AND ENGINEERING LIMITED- 39 CARTHEW ROAD, HAMMERSMITH, LONDON, UNITED KINGDOM, W6 0DU 
- CHS BUILDING & ENGINEERING SERVICES LIMITED- 11/12 HALLMARK TRADING CENTRE FOURTH WAY, WEMBLEY, MIDDLESEX, ENGLAND, HA9 0LB 
- APPLIED SYSTEMS ENGINEERING (UK) LIMITED- 73A CLIFTON STREET, LYTHAM, LANCASHIRE, FY8 5ER