Treasury has revised its policy on certain transactions as a result of recent EU case-law.
Any funds arriving in the UK, or in a UK bank anywhere in the world, which have come from, or via, any person who is the subject of sanctions, must be frozen in a suspense account, or other separate account, on their arrival in the UK bank.
The new policy will come into effect at midnight on 31 July 2014.
A copy of the Treasury notification is available. http://bit.ly/UfGLU4