Although it might be UK rules, simply doesn`t seem right :
"An elderly British ex-nurse who lived in the UK for 66 years has been hit with a £5,000 bill from her former hospital after falling ill during a visit from her new home in the USA.
Kathleen Batten, 83, returned to her hometown for her sister's funeral but suffered a heart attack as she read a tribute during the service."
Source and full story
http://www.telegraph.co.uk/news/health/12057205/British-nurse-stunned-by-5000-NHS-bill.html