Russia has banned the importation of fruit, vegetables, meat, fish and diary imports from the United States, Australia, Canada, the European Union and Norway, Prime Minister Dmitry Medvedev has said.
The measures are part of a raft of counter-measures to be imposed after the targeted nations imposed sanctions on Russia over its role in the crisis in Ukraine.
The import ban begins today and will last for one year, he added.
More top news
Wintry scenes across the UK this late in April have not been seen since the mid-1980s.
The Labour leader will also announce an inquiry into anti-semitism and other forms of racism to be chaired by Shami Chakrabarti.
A switch in the wind direction will mean the unseasonably bitterly cold air of the last few days finally gives way.