From the outset, Euston intended to create two versions of the story; a four-part serial for broadcast on UK television and a 100-minute film, "The Quatermass Conclusion", for distribution abroad. While writing the scripts, Kneale was "careful not to pad, because I knew that was the obvious thing, but to write in material which can be removed". There is one major plot deviation between the two versions; in the TV serial, Quatermass is separated from Annie Morgan as they transport Isabel to a London hospital, after Quatermass is dragged from the passenger seat of the moving vehicle by a member of the Blue Brigade. This scene is slightly changed in the film version so that Quatermass manages to stay on board the vehicle with Annie and Isabel, despite the Blue Brigade attack, enabling Quatermass to stay with Annie and Isabel as they go into the hospital. This meant that two versions of the hospital scene where Isabel dies were shot, one with Quatermass present (the film version) and one without (the television version), as well as an earlier scene at the hospital unique to the film version where Quatermass talks on the telephone. As Quatermass is present at the hospital in the film version, it enabled all the footage from the TV serial featuring Quatermass with people at the junkyard, following his separation from Annie and Isabel, to be cut out of the film and thus greatly help in getting "The Quatermass Conclusion" down to around 100 minutes. There was little interest among film distributors in "The Quatermass Conclusion", and it received only a limited theatrical release.