Watford's Coca-Cola Championship match against Swansea has been postponed due to a frozen pitch after the undersoil heating failed at Vicarage Road.
A pitch inspection on Saturday morning ahead of the afternoon match found the surface to be unplayable.
Several other matches have also been called off as a fresh cold spell causes problems.
The League Two match between Lincoln City and Dagenham and Redbridge and the Blue Square Premier match between Chester and Grays Athletic have also been called off.
In Scotland, the Second Division meeting between East Fife and Clyde, and the Third Division clash between Forfar and Elgin have been postponed too.
Saturday's racing programme has also been hit, with meetings at Doncaster and Fairyhouse called off.
Cheltenham and Uttoxeter will go ahead after the tracks passed morning inspections.
Officials at Hereford announced that Sunday's meeting will be the subject of an inspection in the morning.
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