From comment on the FB thread, Tyron noticed a bright light (like a star) at 2.30PM, then did not see anything again until 4:15 when it seems like they first saw the object in the photos (which I'm 99.999% sure is a plane leaving a contrail) shortly after 4:30 he took 13 pics in three minutes, of which the above are the last two.
Just to add a bit more detail, this is what Tyron Osborne posted:
He was in Brixington, which is marked by the red pin here:it all started when i looked out of my frontroom window and noticed a bright light in the direction of dawlish, it was about 20 to 25 degrees above the horizon. this was about 2.30pm gmt at that point i didnt take much notice bec i couldn't zoom in enough to see it, until i looked again about 4.15pm gmt, when i said to my brother can you see that star on in the distance and he said yes and he then left for work. at 4.20pm i noticed that it had started moving in my direction towards budleigh salterton and had a small tail, so i ran down stairs and knocked on my next door neighbours window and said mark have you seen the comet? he said yes he had been watching for a couple of hrs. so he ran out with his wife and it started to move in our direction at speed (like picture one), so i went upstairs and i grabbed my camera which is a fugi finepix s4240 and set it up quickly and started taking shots, by this time the odject was moving really fast and i was struggling to keep up so i placed the camera were i thought it would be and shot when it was in frame i got 13 pics in 3 minutes the last 3 are what have been published. me mark and clare emmins watched as it speeded up even more and the trail began to grow until it changed colour blue ish, alumanated which is the picture 3 and then went dark and plain disappeared right in front of our eyes before i could get another shot which left us confused bec things just don't disappear into thin air. so i started to look at what i had caught and couldn't believe my eyes when i saw the object (ufo). so i showed mark and clare and we were flabbergasted by what we saw shocked. later that day i put the pictures on my pc and removed the background brightness with windows 10 picture editor that is all (picture 2) the pictures are being scrutinised by a professional picture analysis and will inform you all with the results and more info i tyron osborne mark emmins and clare emmins have nothing to hide and saw what we saw thank you all
So Dawlish is roughly southwest, and he saw something in that direction at 2.30pm. It's not at all clear that the object he saw at 4.15pm is the same one, but he watched it and it was moving from southwest towards the southeast (Budleigh Salterton), ie moving roughly west to east but staying south of his location.
This is a sky chart for 2:30pm on December 28 from Exmouth:
The sun was towards the southwest, i.e. in the direction of Dawlish. (Note that the sky map has east and west reversed, because it represents the view as if it was held above your head.) It would be interesting to know where he saw the bright star-like object in relation to the sun. I can't think of any astronomical object that would have been visible at that time (Venus can sometimes be seen during the day, but unlikely that early in the afternoon, and it was to the east of south anyway). Could it have been the sun reflecting off another, unrelated aircraft?