Prince William and Kate Middleton pose for the press after announcing their engagement in November 2010. (Reuters)

British Prime Minister David Cameron has encouraged the tourism industry to take advantage of upcoming events like the royal wedding and the 2012 Olympic Games to boost visitor numbers over the next four years.

"This year and next will see the eyes of the world focussed on Britain as never before," Cameron told industry representatives Wednesday. "A royal wedding, Her Majesty's Diamond Jubilee and, of course, the London Olympic and Paralympic Games offer us a once-in-a-lifetime opportunity, not just for national pride and celebration, but also to promote this country as the perfect tourist destination."

Tourism operators are right to get ready for an influx of tour operators, says VisitBritain CEO Sandie Dawe.

"It will also be an enormous boost for the British tourism industry," she said in a statement sent to QMI Agency. "Our research indicates that in a typical year the places, events and history associated with Monarchy generate well over £500 million ($700 million) in revenue for the British tourism industry. We would expect that in a royal wedding year we would do even better than that."

And it's not just royal watchers and monarchists who will be interested, Dawe said.

"They (Prince William and Kate Middleton) are a very modern couple whose youth and vigour is very attractive. Millions of people around the world may see the wedding as the perfect moment to come to Britain to see the young royals and our much loved Queen," she said.

Prince William proposed to Middleton in October and they announced their engagement Nov. 16. They are set to marry April 29.

Ted Flett, the Canadian public relations manager for VisitBritain, said there has been a lot of chatter online about the royal wedding.

"In our social media channels on Facebook and Twitter, we have found more than average comments and expressions of interest related to the royal couple," he said from his Toronto office, adding that it's a great "kick start" for England's tourism, which will also see the Queen's Diamond Jubilee next year.

Allison Wallace at Flight Centre Canada said they've also noticed interest in England for this year is growing.

"We're starting to see inquiry for the U.K. in mid/late April and we definitely anticipate the royal wedding to garner a large amount of interest in travel there this spring/summer."

But those looking for a deal around the time of the royal wedding are likely out of luck.

She said while flights and hotel rooms are still available, "hotels will be pricey as they're anticipating a big interest and will likely hold their prices unless it gets close to the event and they're not selling well."