Sugar beet farmers have been told by their union to prepare for a 10% cut in this year's quota.
In a letter to growers, the National Farmers Union says it is disappointed and accuses ministers of losing their nerve during talks with Europe.
Essex, Norfolk, Suffolk, Bedfordshire, Cambridgeshire and Hertfordshire farmers had asked for no reduction in UK quotas after a 7% cut last year.
The UK sugar industry is said to be one of the most efficient in the EU.
Raw material
UK growers produce only 50% of domestic consumption needs, importing the rest from African, Caribbean and Pacific countries.
The NFU wanted quota cuts to be targeted at countries which produce an exportable surplus.
Farmers hope the EU will decide exactly what they plan before this year's crop is sown in the middle of March.