Factual error: The Metropolitan Police isn't a national police force (except for close protection and anti-terrorist matters). It has no authority over other police forces. It doesn't take over criminal cases from other police forces. It hasn't even provided investigation teams on request for decades. Every force handles its own investigations. A Met chief superintendent and his team coming in, as depicted here, and taking over an Avon and Somerset investigation just wouldn't happen.
Just the Right Distance From the Sun / Solar Power Rover - S1-E3
Continuity mistake: In "Solar Power Rover", when they open the gate to DSA, the lock switches sides.
Continuity mistake: When Foster and his goons are at Asa's place and Asa is walking towards the door, he has already thrown the stick that he was fiddling with his toenails with down, and has both hands in his pockets. Shortly afterwards he has the stick back in his hand at the door.
Factual error: Hap is sending a package to Houston, Texas but the zip code he writes is "89921." This isn't anywhere near Houston. At best it's El Paso, although 89921 isn't in use. (And if his 5s look like 8s, "59921" is in Montana).
Factual error: Cars in Thailand drive on the left side of the road with the steering wheel on the right, unlike the ones shown in the episode.
Factual error: Pierre Bezukhov's spectacles are of the type with nose pads, which were not invented until the late 1920's.