Company locations
The list below only contains addresses of agriculture-related sites. On top of this, its products are tested at farms owned by individual farmers and companies. Details of all known sites are given below. Note that you may be able to arrange a guided tour of the sites if you have a good reason - for example, you're a student, a researcher or perhaps a tourist. Generally you should speak to the communications department about this.

Ongar
Ongar is Aventis' UK headquarters and one of four global centres for research and development [132] with a particular focus on herbicide research [134]. Over 300 people are employed there. It is a large site with one large, fairly new, 2/3 storey red-brick building housing offices surrounded by smaller buildings, many pre-fabricated. There are farm buildings at the rear of the site within a couple of hundred metres of a public footpath. To one side there are field trial plots (probably not GM) next to a car park, which has a CCTV camera. There is only one entrance to the site, which is where the reception / security guard are located.

Aventis CropScience / Agriculture Limited, Fyfield Road, Ongar, Essex, CM5 0HW Tel: 01277 301 301 Managing Director (UK), John Drinkwater

Hauxton
Massive chemical plant at back, behind 3-4 storey office block fronting onto road. Chemical production. Labs "for certain things" too (mainly process testing we assume).

Cambridge Rd. Hauxton, Cambridge, Cambridgeshire, CB2 5HU. Tel: 01223 870 312 Fax: 01223 872 142

Norwich
Production facility for agrochemicals.
Sweet Briar Rd. Norwich Norfolk NR6 5AP Tel: 01603 242424
Manager David Jones

Widnes
2-storey reception building at front, with chemical plant at rear.
2 manufacturing plants here, one for herbicide, one for fungicide. Fungicide is all computer-controlled; very little manual work. One or two separations, odd pH test, send samples to lab, analytical sampling etc, but this isn't very much. Herbicide plant is not totally computer-controlled. They just make active ingredient here, which is then sent to Hauxton site and another in Germany for blending into a final product [135].

Whiffen Works, Gorsey Lane, Widnes, Cheshire WA8 0RN Tel: 0151 424 5681 Fax: 0151 420 4355

Manningtree
Experimental farm handling 'experimental' seed. Laboratory and test plots. This may be a site where GM seed is handled and possibly stored. Manningtree is near both Harwich and Felixsotwe ports.
Aldhams Farm, Dead Lane, Lawford, Manningtree. Essex CO11 2NF Tel: 01206 281777

Chishill
No obvious offices or farmhouse, but barn for storage. Small farm with a range of trials. Mainly herbicides, fungicides and insecticides and some GM crops.

Chishill Orchard Farm, Heydon Road, Great Chishill, Royston. Herts. SG8 8SS

Shelford
Address not known, though it is in one of two villages, Great Shelford or Little Shelford a couple of miles east of Hauxton. A field station where trials are conducted as at Chishill, though there are probably no GM crops grown here as there is no current deliberate release consent for the area.

Newbald
Small purpose-built laboratory and office.

Cliffe Rd North Newbald, York. North Yorkshire. YO43 4TY Tel: 01430 827747