Teachers have been given the "green light" to "get tougher on discipline", an education minister told Daybreak.
Liz Truss said one third of teachers were "not sure" how to discipline children and the Government was supplying teachers with clear guidelines of what punishments could be administered.
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Among those expected to attend the ceremony will be former US President Bill Clinton and ex-Northern Ireland first minister Peter Robinson.
Five people have been killed and 40 injured after a car and knife attack in London on Wednesday.
A wet, wintry night in places with rain and hill snow slow to move away from southern Scotland and northern England.