The Black Arrow projectile had lain at its crash landing site in the South Australian outback for more than 48 years.

Over time it was damaged by extreme weather and vandalism, but then space technology firm Skyrora stepped in to return it home.

The Black Arrow made the trip from the Australian desert to Edinburgh via Adelaide.

The rocket - described as "the most important artefact" of the UK's space industry - is to go on display in Penicuik, Midlothian, later this month.

Daniel Smith, director at Skyrora, said: "This is quite feasibly the most important artefact linked to the UK's space history."

The rocket will be unveiled at Penicuik later this month, not far from the Skyrora headquarters and workshop in Edinburgh.

"With the UK government aiming to make us a launch nation again, it seemed like the perfect time to bring Black Arrow back," Smith said.

"We really hope the rocket will help to inspire current and future generations of scientists and engineers."

Developed and tested on Britain's Isle of Wight, the Black Arrow program completed four rockets between 1969 and 1971.

The third flight was the first and only successful UK-led orbital launch, but the program was then cancelled.

This is said to have given the rocket "cult status" among the space community.

Skyrora has also commissioned a plaque to be placed where Black Arrow had lain.

Dr Graham Turnock, chief executive of the UK Space Agency, said: "Black Arrow is testament to Britain's longstanding heritage in the space sector which continues to thrive today."

Skyrora successfully completed its inaugural sub-orbital test launch north of the border last year.

The company's next rockets, Skylark Micro and SkyHy, will allow its team to gain more valuable launch experience, with the latter capable of reaching the edge of space - a feat never accomplished by a private company launching from the UK before.

Australian Associated Press