- NIGEL FREDERICK BARKER- Born October 1958 - 37 BENNETTS HILL, BIRMINGHAM, ENGLAND, B2 5SN 
- STEPHEN FREDERICK BARKER- Born September 1960 - 1 ACORN WAY, BELPER, DERBYSHIRE, DE56 1BG 
- JACK FREDERICK BARKER- Born December 1915 - FLAT 9 SPICERS COURT, STADE STREET, HYTHE, KENT, CT21 6EB 
- ANTHONY FREDERICK BARKER- Born May 1966 - 47 LONGSTONE GROVE LONGSTONE GROVE, EDINBURGH, MIDLOTHIAN, SCOTLAND, EH14 2BT 
- FREDERICK DENNIS BARKER- 149 ALMSFORD ROAD, YORK, NORTH YORKSHIRE, YO2 5NU 
- RAYMOND FREDERICK BARKER- Born September 1952 - 7 LINCOLN HOUSE, CHANTRY ROAD MOSELEY, BIRMINGHAM, UNITED KINGDOM, B13 8DH 
- JOHN FREDERICK BARKER- Born December 1931 - 33 BINGHAM PARK CRESCENT, SHEFFIELD, SOUTH YORKSHIRE, S11 7BH 
- RICHARD FREDERICK BARKER- Born December 1946 - 17 MURTON CLOSE, BURWELL, CAMBRIDGE, UNITED KINGDOM, CB25 0DT 
- ROGER MARTIN BARKER- Born December 1965 - HADHAM HOUSE HIGH HURSTWOOD, UCKFIELD, TN22 4AE 
- ARDEN SECRETARY LIMITEDDisolved- 05706831 - Dissolved on 18 July 2023 
- A T BARKER CONSULTING LTDDisolved- 15491107 - Dissolved on 7 January 2025 
- FREDERICK SAGE CO LIMITEDActive - Proposal to Strike off- 08507561 - Incorporated on 29 April 2013 
- SHAREEF INTERNATIONAL LTD- 14391231 - Incorporated on 2 October 2022 
- ROGER LEONARD BARKER- Born September 1958 - 3 HIGHFIELD COURT, LEEDS, WEST YORKSHIRE, LS12 4BU 
- ROGER MITCHELL BARKER- Born September 1942 - BANK FARM, ALDCLIFFE, LANCASTER, LANCASHIRE, LA1 5BQ 
- ROGER WINSTON BARKER- 24 BURN BRIDGE OVAL, HARROGATE, NORTH YORKSHIRE, HG3 1LP 
- SECRETARYCENTER LTD- 12045064 - Incorporated on 11 June 2019 
- TIMOTHY ROGER BARKER- Born January 1966 - 306 BRISTOL ROAD, EDGBASTON, BIRMINGHAM, WEST MIDLANDS, ENGLAND, B5 7SN 
- ROGER WILLIAM BARKER- Born January 1958 - 6 KENSINGTON ROAD, IPSWICH, SUFFOLK, IP1 4LD 
- ROGER WILLIAM BARKER- Born January 1947 - 5 TRITTON GARDENS, DYMCHURCH, ROMNEY MARSH, KENT, TN29 0NA