The world’s longest bus-route, linking India to the United Kingdom, will launch next year in a bid to recapture the spirit of the Hippie Trail of the 1960s.

Adventures Overland, the travel company behind the project, promise a “life-changing journey” taking in 18 countries over 70 days.

The 20-seat luxury bus will start in New Delhi before crossing Myanmar, Thailand and Laos on its first leg.

The second leg will negotiate China and a third will take in Central Asia and the historic cities of the Silk Road on the way to Moscow.

Finally, the fourth leg will traverse Eastern and Central Europe before arriving in London via Brussels.

And then, after a deep clean, the bus turns around and does the entire journey in reverse.

The drive mirrors the “Hippie Trail” of the mid-20th Century in which Europeans would slog their way overland to South Asia.

The route came to an end in the late 1970s after the Iranian Revolution and Soviet invasion of Afghanistan meant borders were closed to Western travelers.

Around 40,000 people have registered an interest in taking the journey once more, according to the founders of Adventures Overland, Tushar Agarwal and Sanjay Madan.

However, those who wish to board will have to part with $20,454, a fee that includes local guides, tours, hotel stays, some meals and visa and admin fees. The bus itself comes with wi-fi, entertainment systems and “business-class” seats.

The exact launch date depends on Covid-19 restrictions, the company’s website states.