Goofs

(at around 1h 17 mins) The alien ship is described as being in "geostationary orbit" over London. It's impossible to be in geostationary orbit over non-equatorial locations.

(at around 2 mins) It is stated that the continuous acceleration from the engines created artificial gravity. If they had been continually accelerating then when they went to dock with the alien ship they would need to spend hours, if not days, slowing down.

The payload doors of the Columbia are closed. Payload bay doors were always opened shortly after the shuttle reaches orbit because inside the doors are cooling panels which were necessary to keep the shuttle cooled.

Col. Carlson is wearing the Republic of Korea Presidential Unit Citation over his right pocket. The US Air Force wears unit citations over the left pocket with other ribbons, whereas the US Army wears them over the right pocket.

Grenades explode with shrapnel and shrapnel, not fire.

Near the end of the movie, when Carlsen nears the female vampire, the steps of the building housing her body are crowded with zombies. But conveniently, there is a clear path of the stairs which he can walk through.

There was a lot of mental coercion going on throughout the movie. Chances are - she made sure there was a path.

(at around 26 mins) When the troopers are battling the male aliens as they back toward the steps, gunfire can be heard even though they're clearly not firing but just waving the guns around.

At ~33:33, the sound of the aliens crashing glass was mistaken for gunfire during the gun waving, before the shooting started.

(at around 41 mins) The laser torch Carlsen uses burns open the plastic bag around the bat creature and sets it on fire but doesn't affect the rope of the specimen bag.

It only looks like rope. It's actually made of non-flammable fiber strands.

(at around 29 mins) When the first victim of the Space Girl awakes and drains the life from the pathologist, Dr Fallada orders both to be placed in isolation cells. But the "cells" they are placed in are fence sided storage rooms full of drums, canisters, and other potential weapons. Isolation cells would have solid walls and doors, and would be completely empty.

One person's ideal isolation cell is the next agency's fenced storage room.

(at around 1h 12 mins) A model aerial shot of London as Caine and Carlson travel back to the city by helicopter shows Tower Bridge beside St Paul's Cathedral, which in reality is around two miles west of the bridge, while the Tower of London, which is directly beside the bridge in reality, is absent.

This is not a goof, it's "creative geography" and is a widely used cinematic device.

The vampire girl is hiding in St Paul's Cathedral, but the blue beam she's emitting appears to emanate from the dome of Greenwich Observatory.

In a scene in which the crew is shown floating in zero-g, their hair is all hanging down, clearly affected by gravity.

The Churchill had temporary gravity because of its nuclear rocket motor creating acceleration, but the angle of its mounting would have had the crew standing perpendicular to the direction of force, not to the cabin's deck.

When Carlson is facing the steps of the cathedral you can see piles of twitching bodies all over the steps leading up to the doors. As he walks up the stairs you can clearly see some of the extras holding onto the limbs of the dummies in the pile and shaking them to make them move.

When Caine enters the lab to meet Fallada at the end of the film, the shadow of the camera is seen on the wall on the left side of the screen.

The dead crew members of the Churchill have to crumble to dust or similiar like the other victims on earth 2 hours after the infection when they can't suck the lifeforce of another human being. But there are all members lying in the space ship "dehydrated" when Carlsen tells his story.

Halley's comet is repeatedly referred to as "Haley's comet". While Halley's comet (named after the astronomer Edmund Halley, and pronounced to rhyme with the word "rally") is in reality often mistakenly referred to in this way (due, presumably, to confusion caused by the rock and roll band Bill Haley and the Comets), it is inconceivable that scientists and astronauts would make the mistake, as they do throughout the movie.