Construction workers may not get a day off but they will play a role in the Royal wedding

Builders working on the route of the Royal wedding may be forced to wear ties and commemorative hard hats on the day of Kate and William’s nuptials, Building understands.

According to a Palace insider the Queen is concerned that builders in cement splattered trousers and hi-vis jackets could ruin photographs of the wedding procession route.

Nervous construction bosses have been sending memos ordering site workers to polish workboots and secure trousers with well-fitted belts.

While 29 April is a public holiday, many workers are taking the opportunity to earn overtime and will be in full view of the world’s TV cameras.

The insider said: “Some of the sites are in very prominent positions - the last thing we want is a builder unwittingly to expose himself as Kate’s bridal carriage passes by.”

An unnamed Palace source said the Queen was happy to have scrubbed-up builders along the route, and has offered to give her royal seal of approval to a special range of construction gear.

Workers on the day will be handed hard hats featuring pictures of William and Kate and a Union flag, and there will be a range of commemorative hammers emblazoned with Kate Middleton’s new royal seal.