The nave of Yaughton's church is roughly aligned in north/south direction (axis of the nave), assuming that the maps are north up. In the real world, churches are always aligned in east/west direction.
Graeme the hobby astronomer says in a phone call or radio interview that the anomaly is located in the belt of Orion. This constellation is only visible in winter. The events that lead to the end of the world however take place during in a short period of time in summer.
Posters of the play "Peter Pan" are shown in different areas of Shropshire. Under the title are the words "Last star on the right." It should read as "Second star to the right".
All of the houses in Shropshire have lights in them but, many of the houses have no light switches to turn them on.
All of the cars in Shropshire have practically the same license plates. Some cars plates read LNT-1138 while other plates have AUJ-819X, etc.
During Lizzie's story at the Lakeside Holiday Camp, it is constantly raining. While exploring the camp four painting canvases can be found. Two of these canvases have a painting of flowers inside two small vases. With how much raining is happening, the paintings should be ruined but, they remain intact.