Continuity mistake: The water/rocks around Barry after killing the alien to when it cuts to Derek through his binoculars seem to change. (00:03:35)
Continuity mistake: Frank walks along the lawn and is standing on a patch of grass covered in brown leaves, when suddenly he gets fired at, so he leaps up (and then rolls to the floor) from green grass, with no leaves at his feet at all. (00:56:05)
Continuity mistake: Through the vomit eating scene, there is vomit sliding and spilling down the outside of the glass bowl in some shots, but it is clean in others. (00:46:40 - 00:48:05)
Continuity mistake: The whole road and the roadside shrubs and bushes completely change between shots, after Robert pulls the bumper from the car off. (00:30:15)
Continuity mistake: When the collector has got Robert's hand trapped in the window, he drives off, and his car's front license plate is missing, yet is back in the very next shot. (00:29:40)
Continuity mistake: When we see Derek land on the rock after taking the fall down the cliff, behind the rock he landed on there is grassy hills and then some big rocks. Later when they say birds were the only thing he can relate to, it shows a shot of Derek covered in gulls, but now the huge rocks in the background scenery have gone, and in addition, the position of his legs have changed too. (00:23:25 - 00:25:55)
Continuity mistake: As he rolls down the cliff, one of Derek's shoe fall off, but they're both back on when we see him land on the rock. (00:23:20)
Continuity mistake: In close-ups, the gun that drops from Barry's pocket is sitting on a piece of wall plaster that fell off when he got attacked by the aliens in the shed. However the gun isn't there in any wide shots. (00:07:10)
Continuity mistake: As Barry puts the body of the alien into the grass, his right shoe is clearly visible with no blood on it. In the next shot though, he says he should ring his strides out, we then see his right shoe covered in blood. (00:04:10)
Continuity mistake: When Derek is holding onto the rope at the cliffs, we see the alien cut the rope. Later we see Derek holding onto the rope again. (00:21:30)
Continuity mistake: When Derek is lying on the ground by his car, his scarf is tied down to his crotch. When it cuts, it's tied down to his chest. (01:01:10)
Continuity mistake: When all the aliens are eating from the bowl of vomit, one of the aliens has vomit around his mouth before eating from the bowl. (00:47:30)
Continuity mistake: When Derek shoots a hole through an alien, the alien falls over him almost going to the ground. When it cuts, the alien's head is side by side with Derek's head. (00:18:15)
Continuity mistake: When Robert manages to free himself from the collector's car, he keeps running after the car. He grabs the bumper which falls off. Robert falls to the ground beside the bumper. When it cuts, he has moved away from the bumper. (00:30:15)
Continuity mistake: In the vomit section: when they take the bucket to the boss, there are pieces of food on the top of vomit although they weren't there when they toke the bucket off, and the amount of vomit seems to be always the same when they drink it. (00:46:55)
Continuity mistake: In the start of the film you see "the boys" driving in their car talking on a C.B. to another man in the group they are meeting. If you notice the one doing the talking spends most of the time with the CB backwards using the mounting notch by his face, but when the scene switches from inside the car to outside it is turned around the correct way. (00:08:40)
