Peter Robinson and Martin McGuinness had said they were meeting the taoiseach Enda Kenny "to achieve maximum clarity on this issue".

BBC: A5 road sign

Others issue lines of credit that set a maximum borrowing amount over a college career, provided the borrower remains in good standing.

WSJ: New College Lenders Step Up

Prime Minister David Cameron said the issue needed to be reviewed and the Justice Secretary, Chris Grayling, agreed the maximum sentences for disqualified drivers who caused death or serious injury were too low.

BBC: Gloucester MP campaigns for dangerous driving laws reform