Volumes 1-4

In the present days in England, vampires are still inhabiting the country. The government decided to form a force that will destroy them all swiftly and quietly as possible. The Hellsing family is the best one up to this mission, they have been battling the undead for centuries and also they have a secret weapon to eliminate the vampires and ghouls. The secret weapon is an ancient vampire Alucard. Alucard has swore his allegiance to the family, after he was captured in middle ages by van Hellsing. Now Alucard is working under the command of a new Hellsing leader - Integral Wingates Hellsing. The Hellsing organization has became so successful, that every undead creature in the world has heard of them.

A surprise attack from the team known as the Valentine Brothers on Hellsing, destroyed most of organization with their artificially made vampires. Alucard together with Ceras Victoria (was recently converted into a vampire by him) and butler Walter (former Hellsing top operative) puts a stop to them. In this ferocious battle most of the Hellsing soldiers were killed. And now, there's a bigger menace threatening England. The true enemy has finally appeared. This attacker organization worked with the Nazis back in WWII on artificial vampire research. Like Valentine Brother's army the Millennium main army is made up of vampires and ghouls. The German base organization has declared war to destroy Great Britain and it’s up to Hellsing to stop them! Can the Hellsing organization do it?! Or is Great Britain doomed? Get ready for a hell of adventures!

So there we have it, the plot is almost the same but the main accent is attack of the Valentine Brothers. In anime there is no ancient vampire Incognito who almost destroyed London. He was present only in anime for to divide and mark out the series.