Downing Street spokesman:
"The Prime Minister welcomed today’s announcement by the Royal Household of the date for the marriage of Prince William and Ms. Middleton. It was agreed by Cabinet that the day will be marked by a Public Holiday. Public Holidays are devolved in Scotland. The Scottish Government will be making proposals to the Scottish Parliament shortly."
The Prime Minister said:
"The wedding of Kate and William will be a happy and momentous occasion. We want to mark the day as one of national celebration, a public holiday will ensure the most people possible will have a chance to celebrate on the day. The costs of the wedding itself will be met by the Royal Household, with Government meeting any wider security or transport related costs."
