When Pete is checking the wallet on the golf course Mykas hands change potions constantly. First her hands are clasp together next one hand is on her hip and then both are in front of her and she has a card in one.
British race courses don't have a man with a trumpet announcing each race.
British racecourses are turf, not dirt-track.
As Claudia is trying to save the jockey towards the end of the episode, the word "True Center Gate" can be seen in the background.
As the scene is based in England, the spelling should be "Centre".
When Claudia and Steve are talking to the veterinarian, she is manually pushing the horse exerciser. A groom is leading a horse behind her but the horse is not actually attached to the exerciser. There isn't any reason for the exerciser to move.
The Jockey Club polices British Horse Racing not the Racing Commission and the US secret service have no jurisdiction in the UK either unless they are working with the UK police force .
The character referred to as "Ricky Jackson" in dialogue is called "Ricky Johnson" in the credits.
The Jockey's Colours are all the type found on American Racecourses.
Watford doesn't have a racecourse.
After Pete and Myka talk to Artie, he tells them to keep a roof over Pete's head until they snag the artifact. But, when they pull up to the outdoor show the car they are in has a sun roof and it is open, Myka at least should be smart enough to close the roof, she tells him to stay in the car so he doesn't float away, but, because the roof is open he floats out of it and almost dies.