A total of 13 itineraries, with destinations including Japan, Vietnam, Malaysia, Sri Lanka and India, are now available to book.

In total, there are around 100 departure dates across the itineraries, including 17 exclusively for solo travellers on four different trips.

The itineraries run from January to November and include a 15-day India and Shimla tour, which features a visit to the Taj Mahal, a journey on the Shimla railway and excursions to both Old and New Delhi for £1,899pp.

A 16-day Vietnam and Cambodia tour includes a stay in Hanoi with a bicycle rickshaw expedition, a cruise in Halong Bay and a stay in Saigon for £2,599pp. A four-day extension, with an additional tour of Laos, can be added for £3,199pp.

The 13-day "Japan: Land of the Rising Sun" tour offers visits to Tokyo and Kyoto, sightseeing of Mount Fuji and a journey on a high-speed bullet train for £3,699pp.

A 15-day "Journey on the Mekong" cruise with a stay in Saigon, tour of Phnom Penh and cruising across the city and temples of Angkor comes in at £3,299pp.

A 13-day Sri Lanka tour includes temple and palace day trips, a feeding time visit to Elephant Transit Home, a 4x4 drive in Yala National Park and two days on a tropical beach for £1,699pp.

The 13-day "Japan Garden Discovery" tour features visits to 10 traditional gardens in Tokyo, Hakone, Hiroshima, Okayama and Kyoto, for £4,299pp.

A further two itineraries to Nepal and Bhutan and southern India are also set to go on sale.

Will Sarson, head of strategy and innovation at Riviera Travel, said Asia "really is a destination like no other". 

"We’re pleased to once again offer a wonderfully-diverse range of tours and holidays to Asia," he added.

"We have a wealth of eye-catching experiences on offer, with guests able to immerse themselves in the spectacular Taj Mahal, marvel at the mighty Mekong river delta, or get expert horticultural hints from a Japanese gardener."