I've got a character (24 years old, American, Caucasian, male) with an undiagnosed (so far in the story) brain tumour, which causes him to have seizures and hallucinate. He collapses in the middle of Camden Market whilst on vacation in London, and is taken to hospital, where he's primarily diagnosed with a concussion from hitting his head when he fell, and is in the A&E when he has another hallucination during a seizure.
My questions iare:
1. Which hospital in London would he be most likely to be taken to given the location of his collapse? (I'm assuming somewhere like the Royal Hampstead Free Hospital, which is the closest NHS hospital with an A&E department according to Google Maps.)
2. Would the medical staff conduct a CT scan or an MRI straight away, to determine the severity of the concussion, and therefore "stumble across" the tumour, or would it be more likely that they'd keep him in for observation and, upon him having another seizure which caused him to hallucinate, conduct the scans later to find out the reason for him seeing things that weren't there?
3. Would he be transferred to a hospital in his home state of New Jersey after being diagnosed, or would the British medical system treat him?
I hope I've not been too long-winded and roundaboutish in asking this! Any help would be greatly appreciated.