Agents can now book almost all Collette Worldwide Holidays' escorted tours as far ahead as April 2015.
Full details are available online, where agents can also pre-register for delivery of the new brochure of tours which will be available from September.
Prices and departure dates are now available for many of the operator's most popular tours and destinations.
As examples, a nine-day 'Islands of New England' itinerary leads in at £1,899 per person. Highlights include visits to Providence, Rhode Island, Newport, Boston, Martha's Vineyard, Nantucket and Cape Cod. The tour also includes a range of experiences such as visiting a traditional New England cranberry bog; stepping back in time at Plimouth Plantation, a recreated 17th century village; and a traditional New England lobster feast.
Meanwhile, a 28-day 'Best of Australia and New Zealand' tour costs from £6,489 per person. Starting in Cairns, the tour visits many of Australia's natural wonders including the Great Barrier Reef, Uluru, the Kakadu National Park and Tasmania, as well as Alice Springs, Melbourne and Sydney. In New Zealand, guests can discover South Island - Milford Sound, the Mount Cook National Park and the Southern Alps, before crossing Marlborough Sound to North Island and visiting Wellington, Rotorua and Auckland.
Prices are based on two sharing and include flights, accommodation in four- and five-star hotels, most meals, the services of a tour manager and free door to door pick-up within 100-miles of the UK departure airport.
Also available are dates and prices for the new RHS Garden Holidays tours, which have been developed in conjunction with the Royal Horticultural Society. These specially themed tours offer a chance to discover gardens in a range of destinations across Europe as well as in the USA, New Zealand, Japan and South Africa.
For more information visit www.colletteworldwide.com or call 0800-804 8700.