It follows a decision on Friday by the Secretary of State, Sir Chris Bryant, to ban the march, after receiving police advice.

The education minister has warned it would immediately cost his department £20m a year at a time when it is already struggling to balance its budget.

The motion against Michelle O'Neill and three other Sinn Féin ministers will be debated after receiving the backing of unionist parties last week.

Politicians are urged to prepare as over-65s are projected to outnumber children in NI by next year.

The £16.6m scheme is designed to analyse the genetic make-up of every cow in Northern Ireland.