The top half of a complete skeleton is revealed when the workman pulls a lump of clay away with his shovel. But during the press conference, the archaeologist says they've only found some skull fragments and lower limbs. Liar.
Sladden is going back into the Underground dig site and the lights go out. He takes out his flashlight and someone from off-camera shines a light in front of Sladden to provide the appearance of light shine due to the underpowered flashlight.
When Roney & Quatermass enter the "missile" they are both wearing gloves to protect themselves against the cold surface. When they take the arthropod' body out Roney has taken off his gloves. When they pass it over to the soldiers he is wearing gloves again.