Couple of other data points to corroborate the explanation. If you'll read the first article below, you'll note it, unlike the original article I posted, gives the time of the "sighting" as "around 8pm" (on Wednesday the 15th of April.)
Burning Object Spotted Spiralling Through The Sky In The UK
If you'll look at the data below for 15 April in Cambridge, you'll note sundown there on that date was 7:58.
Sunrise and sunset times in Cambridge
Burning Object Spotted Spiralling Through The Sky In The UK
If you'll look at the data below for 15 April in Cambridge, you'll note sundown there on that date was 7:58.
Sunrise and sunset times in Cambridge