Mar Gunnarsson, swimmer and Manchester student who is due to compete at the Paris Games, says his career is at risk

A Paralympic swimmer due to compete in this summer’s Games has said his career is at risk after a post-Brexit policy change barred him from flying in and out of the UK with his guide dog.

Mar Gunnarsson, a visually impaired Icelandic national studying in Manchester, has been unable to fly to sporting championships to represent his country because his guide dog is not recognised as a service animal by the UK authorities.