Holidaymakers upset by Kate's security

London - Holidaymakers on Mustique are annoyed by heightened security following the Duchess of Cambridge's arrival on the Caribbean island.

Duchess Catherine and her family - including parents Carole and Michael Middleton, sister Pippa and brother James - are currently staying at a villa owned by Mark Cecil, a hedge fund manager and friend of the family but other vacationers are furious that their movements have been restricted because of the high profile arrivals.

Guests have reportedly been questioned by security men while walking on the beach and told their must travel in vehicles provided by one of the island's two hotels in case they try to snap pictures of the villa.

One person told the Daily Mail newspaper: "This isn't exactly the way one expects to be treated when you pay very good money to visit the most exclusive island in the Caribbean."

Security is set to get even tighter this week when Catherine's husband Prince William joins the group after he finishes his weekly shift as an RAF search and rescue pilot in Anglesey, North Wales.

The sun-soaked holiday could be the last chance the couple get to spend some quality time together before William is deployed to the Falkland Islands for a six-week period with the RAF next month.