On her last mission, HMS Invincible discovered an alien threat beyond human understanding. Defeat means the end of everything, the end of existence as nothing more than mindless host-bodies, the end of humanity and its alien allies alike. The stakes could not be higher. As a deeply divided humanity struggles to prepare a defense, with enemies inside and outside the human sphere just lurking to strike, Invincible is sent deep into alien space on what should have been a simple reconnaissance mission. 

The alliance between the Great Powers is starting to fall apart, the human economy cannot keep up with the urgent need for newer and better starships, and politicians are demanding an end to military spending. When a generation starship is detected approaching a British colony world, HMS Invincible is dispatched to intercept the aliens before they can make landfall. But the newcomers bring with them tidings of a new and deadly threat, an expansionist alien race far too close to the Human Sphere for comfort...and a sinister horror beyond human understanding.

The Royal Navy never expected to fight a full-scale interstellar war. Everyone knew the Great Powers would never risk everything on armed conflict when there was plenty of room for everyone in outer space. But when a hostile alien force stumbles across humanity's handful of colony worlds, the Great Powers must set aside their differences and fight to preserve humanity from utter destruction.

The first major alien offensive against Earth has been blunted, winning humanity time to deploy new weapons and prepare new tactics as Earth's space navies prepare to take the offensive. But the enigmatic aliens have plans of their own - a full-scale attack on Earth that will either win the war in a single stroke or lose it. The stakes have never been so high. The fate of humanity itself is in the balance.

The Second Interstellar War - pitting humans and their Tadpole allies against an enigmatic alien empire - appears to have stalemated. Neither side can push through to the other's core systems without risking substantial losses, neither side can gain a decisive advantage. But when a brilliant human scientist invents a way to jump across the stars without a gravity tramline, an opportunity arises to strike the enemy in their undefended rear. It is an opportunity that cannot be allowed to pass.

HMS Vanguard is the most powerful battleship ever to be commissioned by the Royal Navy, but she is not a happy ship. Her commanding officer is eccentric, rarely seen on the bridge; her former XO has deserted his post; and her first middy is resentful because he hasn't been promoted as he deserves.... But when a first contact mission goes badly wrong, HMS Vanguard and her crew are plunged into an interstellar war against a new and deadly alien threat.

A new war has broken out.... Indian ships have invaded three British-held systems, and Indian troops have occupied British colonies, forcing Britain to choose between war and shame. The Royal Navy, battered by the fires of the First Interstellar War and desperately trying to recover from the terrifying casualties, must launch a counterattack and recover the colonies. For HMS Warspite - and a task force of British warships - the stakes have never been so high.

Earth has fallen. The Core Worlds have collapsed into chaos. As planetary governments declare independence, war is breaking out everywhere. Entire sectors slip out of contact, warlords battle for power, and the remnants of the once-great Empire are tearing themselves apart. In the shadows, the Terran Marine Corps works to save what little they can to preserve civilization and build a better tomorrow. But now they might have met their match. The marines have seized control of the corporate world of Hameau, only to discover that Hameau is merely the tip of the enemy iceberg.

On her maiden voyage, HMS Warspite discovered Vesy, a world populated by primitive aliens, aliens whose culture had already been twisted and warped by human refugees from the First Interstellar War. Now Captain John Naiser and his crew spearhead a diplomat mission to the alien homeworld, hoping to ease them into the galactic mainstream.

Six months ago, Colonel Edward Stalker and his Marines were abandoned on Avalon, left to fend for themselves as the Empire withdrew from the Rim. Since then, Avalon has been isolated from the settled universe... until now. As a mysterious pirate organisation attempts to take over Avalon, the Marines find themselves struggling against a shadowy figure with dreams of power, while a young civilian is kidnapped and press-ganged into a pirate crew.

Earth has fallen. The Core Worlds have collapsed into chaos. War is breaking out everywhere as planetary governments declare independence; entire sectors slip out of contact, and warlords battle for power. The remnants of the once-great Empire are tearing themselves apart. In the shadows, the Terran Marine Corps works to save what little they can to preserve civilization and build a better tomorrow. But powerful factions are competing with them, determined to establish their own order.

The First Interstellar War is over, but the Royal Navy still has plenty of work to do. As Earth struggles to recover from the bombardment, Captain John Naiser is placed in command of HMS Warspite - an experimental heavy cruiser - and ordered to escort a squadron of colony ships to a star system of immense strategic importance. But as the crew struggle to survive hundreds of light years from Earth, they find themselves dealing with the legacy of the war.

A lonely planet circles a star on the very border of Province 921. Critical resources produced there are claimed by both the Mogwa and the Skay. War between the Galactic giants becomes more likely every day. 

Humanity is losing the war. The once-mighty space navies have been crippled, officers and crew have been stretched to the limit and Earth herself has come under heavy attack. The end cannot be long delayed. For Admiral Smith and the crew of HMS Ark Royal, the stakes have never been so high. The one hope is to make contact with alien factions that might oppose the war.

Ark Royal - the Royal Navy’s outdated space carrier - has won a smashing victory against the enigmatic aliens, capturing one of their starships and returning to Earth. Now, Admiral Theodore Smith and his crew are assigned to command a fleet charged with making a deep-penetration raid into alien territory, a fleet made up of carriers from four different nations. But with a crewman who isn't what he seems, untested pilots and international friction - and a new and dangerous alien plan - can Ted and his crew survive their mission?