Martin Hanbury: 8 books

Having fled to the Triangulum galaxy to escape the Centaur invasion of the Milky Way, the crew of the time ship Valentinian, in company with the alien vessels Jhutat and The Heart of Turilsus, set out to find survivors of the long-lost Ahshari civilisation in the hope that their higher technology...

Curious about what the future holds, the crew of the time ship Valentinian travel to the year 2791 and discover that the galaxy has been invaded by the ancient Centaur race whose existence they learned of on the planet Copernicus in a previous timeline.  Unable to prevent the invasion with just one...

William and Luke continue their investigation into who was really behind the events that led to William's exile, and become ever more convinced that the person in question is from the future.  But before they can discover anything further, unknown alien entities start swarming the time stations,...

In the year 2509, over sixty years since the invention of time travel, the timeline is monitored and policed by Temporal Security. During his routine end-of-shift checks, Commander William Herschel, a vampire with an outstanding career in the organisation, discovers that someone is using the time...

In the year 2511, nearly two years after the destruction of Earth, the last human colony is thriving on the desert planet Copernicus.  But its hopeful prosperity is threatened when Muteki finds a way to return from the dead, with the help of a few of his loyal followers.  While taking refuge in...

Having just escaped from the events at Kirkstall Abbey near Leeds in 1779, William and the mortally wounded Larissa have been taken from their intended destination and land on the planet Melhandur; a world trapped in the medieval era where technology cannot function.  Immediately upon their arrival...

Reunited after their separation at Kirkstall Abbey in 1779, William, Larissa, Luke and Cerah set out to investigate the earliest appearance of the Sapphirus Tempus, curious as to why Talamayn told William that it was the last remaining artefact from an alternative timeline when William recently discovered...

Earth is being conquered by the Centaurs in multiple timelines, some of Valentinian's crew have already been lost, and the Sapphirus Tempus has been destroyed.  The Centaurs' human-like androids have infiltrated human society in each timeline, and their simultaneous attacks across the world precede...