• Aggregate Supplies
  Aggregate House, 100 Twyford Abbey Road, LONDON, Greater London, NW10 7XE
• Amrock
  Victoria Deep Water Terminal, 231 Tunnel Avenue, LONDON, Greater London, SE10 0HH
• Bournewood Sand & Gravel Ltd
  Hockenden Lane, SWANLEY, Kent, BR8 7QH
• Brett Aggregates
  Launders Lane, RAINHAM, Essex, RM13 9GF
• Brett Lafarge
  Hainault Road, Little Heath, ROMFORD, Essex, RM6 5SS
• Cemex
  Oaklands Lane, Smallford, ST ALBANS, Hertfordshire, AL4 0HS
• East Horticulture Ltd
  Rosedale, College Road, SWANLEY, Kent, BR8 7LT
• Express Asphalt
  Water Hole Quarry, Lower Hatfield Road, HERTFORD, Hertfordshire, SG13 8LE
• H Streeter Sand & Ballast Ltd
  High Street, HAYES, Middlesex, UB3 5DA
• Hanson Aggregates
  231 Tunnel Avenue, LONDON, Greater London, SE10 0QE
• Hanson Aggregates
  Chequers Lane, DAGENHAM, Essex, RM9 6QD
• Hanson Brick Ltd
  Stockley Road, WEST DRAYTON, Middlesex, UB7 8NF
• Hanson Premix
  231 Tunnel Avenue, LONDON, Greater London, SE10 0QE
• Hanson Premix
  Church Manorway, ERITH, Kent, DA8 1DE
• J Clubb Ltd
  Darenth Road, DARTFORD, Kent, DA1 1NL
• Kane Plant & Vehicle Services
  Construction House, Soothouse Spring, Porters Wood, ST ALBANS, Hertfordshire, AL3 6NW
• Lafarge
  Rattys Lane, HODDESDON, Hertfordshire, EN11 0RF
• Lafarge Aggregates Ltd
  North Orbital Road, Colney Heath, ST ALBANS, Hertfordshire, AL4 0RY
• Lock Bros. (Haulage) Ltd
  Union Yard, Manor Road, ERITH, Kent, DA8 2AD
• London Rock (Southern) Ltd
  Europa House Europa Trading Estate, Fraser Road, ERITH, Kent, DA8 1QL
• London Voice Publications Ltd
  Europa House Europa Trading Estate, Fraser Road, ERITH, Kent, DA8 1QL
• Philip W Keen Ltd
  Hallsford Bridge Industrial Estate, Stondon Road, ONGAR, Essex, CM5 9RB
• R M C Southeast Materials Co
  Cringle Street, LONDON, Greater London, SW8 5BX
• R.L Wooster
  33 Lodge Cresent, WALTHAM CROSS, Hertfordshire, EN8 8BL
• RMC Aggregates Greater London Ltd
  Oaklands Lane, Smallford, ST ALBANS, Hertfordshire, AL4 0HS
• Square Environmental
  Waterhall Quarry, Lower Hatfield Road, HERTFORD, Hertfordshire, SG13 8LF
• United Marine Aggregates Ltd
  Murphys Wharf, Lombard Wall, LONDON, Greater London, SE7 7SH
• United Marine Aggregates Ltd
  Church Manorway, ERITH, Kent, DA8 1DE
• W.W Baugh
  47 Silvesters, HARLOW, Essex, CM19 5NN
• Walton Sand Supplies
  8 Weylands Treatment Works, Molesey Road, WALTON ON THAMES, Surrey, KT12 3PB
• Yeoman Aggregates Ltd
  Stone Terminal, Horn Lane, LONDON, Greater London, W3 9EH