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The following manufacturers of John Innes Loam-based Composts are registered with JIMA and are authorised to use the JIMA Seal of Approval® to denote that their John Innes Composts are produced in accordance with the JIMA Quality Control Procedures and Specifications. 

GROWISE (THE GREENER GARDENING COMPANY LTD.)
Simonswood Moss, North Perimeter Road, Kirkby, Liverpool, L33 3AN
BULRUSH HORTICULTURE LTD
Magherafelt, Londonderry, UK 
MELCOURT INDUSTRIES
Tetbury, Gloucestershire, UK
LEVINGTON (THE SCOTTS MIRACLE-GRO COMPANY)

Godalming, Surrey, UK
WESTLAND HORTICULTURE LTD
Dungannon, Tyrone, Ireland

This list of members and brand names is liable to change without notice. Current edition is available on request.