- LANGDON LIMITED- 13292837 - Incorporated on 25 March 2021 
- LANGDON AND LANGDON PROPERTIES LTDActive - Proposal to Strike off- 06823411 - Incorporated on 18 February 2009 
- LANGDONC LTDActive - Proposal to Strike off- 10142005 - Incorporated on 22 April 2016 
- AECOM PROFESSIONAL SERVICES LLP- OC306911 - Incorporated on 13 February 2004 
- PETER CHARLES LANGDON HARRIS- 75 BALHAM GROVE, LONDON, SW12 8BD 
- PETER CHARLES LANGDON HARRIS- 25 WOODSTOCK AVENUE, LONDON, ENGLAND, NW11 9RG 
- PETER CHARLES LANGDON HARRIS- Born May 1952 - 75 BALHAM GROVE, LONDON, SW12 8BD 
- LANGDON COMMUNITY- 04055338 - Incorporated on 18 August 2000 
- LUCY QUARTERMAINE LTD- 09773362 - Incorporated on 11 September 2015 
- BP (LANGDON) LTD- 12341690 - Incorporated on 29 November 2019 
- LUCY-EMMA HARRIS- LESLIE FORD HOUSE, TILBURY, ESSEX, UNITED KINGDOM, RM18 7EH 
- LUCY JANE HARRIS- Born June 1993 - THE COLLEGE COLLEGE CLOSE, LINGFIELD, SURREY, ENGLAND, RH7 6HG 
- LUCY ANNE HARRIS- Born August 1956 - BEECH HEIGHTS, LANSDOWN ROAD, BATH, SOMERSET, BA1 5TD 
- LUCY ANNE HARRIS- Born August 1956 - BEECH HEIGHTS, LANSDOWN ROAD, BATH, SOMERSET, BA1 5TD 
- Lucy-Emma HARRIS- Born April 1968 - 110 Lodge Lane, Grays, England, RM16 2UL 
- LUCY EMMA HARRIS- 110 LODGE LANE, GRAYS, ESSEX, RM16 2UL 
- LUCY ANNE HARRIS- Born April 1987 - 4 CASTLE TERRACE, CARRBROOK, STALYBRIDGE, ENGLAND, SK15 3PQ 
- Lucy Emma HARRIS- Born September 1968 - 110 Lodge Lane, Grays, Essex, RM16 2UL 
- LUCY JANE HARRIS- 25 DUDLEY CRESCENT, EDINBURGH, EH6 4QJ 
- LUCY KATE HARRIS- Born February 1996 - 642 DERBY ROAD, WINGERWORTH, CHESTERFIELD, DERBYSHIRE, ENGLAND, S42 6LZ