Glufosinate

A non-selective contact herbicide, which will no longer be approved for sale (from 31 January 2019) and use (from 31 January 2020) in the UK.
Glyphosate

A non-selective translocated contact and non-residual herbicide.
Greenor

A product name for a selective herbicide, containing MCPA (238g/ltr), Clopyralid (57g/ltr) and Fluroxypyr (58g/ltr) as the active ingredients, being applied at a rate of 4 litres of concentrate per hectare in 200-1,000 litres of water. It can only be applied once per year and is supplied by Dow AgroSciences Ltd.
Hygrass-P

A product name for a selective herbicide, containing Mecoprop (150g/ltr) and Dicamba (18.7g/ltr) as the active ingredients, being applied at a rate of 5 litres of concentrate per hectare. An interval of 6-weeks is required between treatments, which is a maximum of 2 per year. It is supplied by Agrichem Ltd.
Hysward-P

A product name for a selective herbicide, containing Mecoprop (92g/ltr), Dicamba (16g/ltr) and MCPA (101g/ltr) as the active ingredients, being applied at a rate of 5 litres of concentrate per hectare for the easier to control weeds of buttercup, white clover, plantains and dandelions, whilst it is 6.0 litres of concentrate per hectare for the harder to control weeds of daisy, and field speedwell. The water volume to be used is from 200 to 500 litres. Only one application per year is permitted. It is supplied by Agrichem Ltd.
Icade

A product name for a selective herbicide, containing Triclopyr (16.2%) and Aminopyralid (2.2%) as the active ingredients, typically being applied at a rate of 4 litres of concentrate per hectare when broadcast, for use on deep rooted weeds and woody weeds. It can only be applied once per year at the maximum individual dose rate. It is supplied by Dow AgroSciences Ltd.
Interfix

A product name for a selective herbicide, containing Clopyralid, Fluroxpyr and MCPA as the active ingredients, being applied at a maximum rate of 4 litres of concentrate in 200-1,000 litres of water per hectare; being applied no more than once per year.
Intrepid [2]

A product name for a selective herbicide which is no longer approved for use in the UK. It contained the active ingredients dicamba, dichlorprop and MCPA.
Ioxynil

A selective herbicide which is no longer approved for use in the UK.
Isoxaben

A residual, pre-emergent, herbicide which is used to control weeds in amenity plantings, such as on golf course, or following seed bed preparation.