They will spend five days in Britain before joining other family members on an eight-day tour of Ireland.
The eight-day tours are scheduled to depart Feb. 5, 12 and 19.
On Monday, he leaves for an eight-day tour of the United States.
During an eight-day tour through Provence last summer, the routes chosen were interesting and relatively free of traffic.
The eight-day tour is £695 per person (about $1,420 at $2.04 to the pound).
The eight-day tour starts on March 31 and costs £1,550, including flights, accommodation, all meals and lectures.
An eight-day tour is $1,165 to $1,244, depending on date, and a 12-day tour, $1,482.
He charges nearly $10,000 per person for an eight-day tour that includes a trip to the pole.
An eight-day tour, Elvis and the Southern Sounds, can cost from £1,290.
In late August, government officials escorted foreign reporters on an eight-day tour of Tibet.