https://www.england.nhs.uk/coronavirus/wp-content/uploads/si...
See also the press release from the regulatory agency specifically about anaphylaxis: https://www.gov.uk/government/news/confirmation-of-guidance-...
Or "anyone with a history of anaphylaxis to a medicine or food should not get"? Do you have a source for anyone with any allergy being denied the vaccine?
It's also rather surprising to me (as a relative layman) that this wasn't picked up during safety trials. I get anaphylactic reactions to some food and medicines and carry an EpiPen. There are a few vaccines which have been counterindicated for me due to this so I have always thought it's a relatively well-known potential side effect from at least some vaccines (and other medicines of course). As such I would have expected it to be looked/checked for during safety trials.